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Mathematics Questions and Answers December 21, 2020

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The noticed values X i , i = 1 , 2 , ...50 is a sample of nornal distribution N ( 1 , 10 ) . Determine the probability that the arithmetic mean X has a value that is greater than 1 , 1.

D Question 6 10 pts We want to determine whether the support for a candidate has decreased from the 55% is was four months ago, so we take a SRS of 100 constituents, finding 52 who support the candidate. Testing at the 10% level, is there sufficient evidence to conclude that the candidate's support has changed? Conduct a full significance test
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Do people walk faster in the airport when they are departing (getting on a plane) or do they walk faster when they are arriving (getting off a plane)? A reputable researcher measured the walking speed of random travelers in two International Airports. His findings are summarized in the table. Complete parts (a)-(c) below. Click the icon to view
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Currently this is what I'm working on with a clustered bar graph and both 15 and 16 problems. For comparisons involving more complicated data, a clustered bar graph can be used. This allows us to compare data values for information in multiple categories on one graph. The sample below illustrates the daily trade volume for three large tech
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Can you explain how to solve such type of statistics questions? It would be great help if you can explain variation of such questions as well. Let X1, ...; Xis be a random sample from a normal distribution with unknown mean & and known variance o' = 81. A sample ], . . . , @16 is collected and the sample mean from this sample is calculated to be a
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Need help answering the following questions 4. Let x be the number of goals scored by a randomly selected premier league footballer in a match. The following table lists the probability distribution of x. Font X O 1 2 3 4 P(x) .53 .36 .06 .04 .01 2 5. According to infogol, the mean number of goals scored by Cristiano Ronaldo in a match is 0.9,
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I need help with all the answers Question 1 of 17 View Policies Current Attempt in Progress Use the normal distribution to find a confidence interval for a proportion p given the relevant sample results. Give the best point estimate for p, the margin of error, and the confidence interval. Assume the results come from a random sample. A 90%
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Question 9 Let (Xn)neNo be a branching process defined as in (8.1.1) in the script on page 310 which satisfies all the following: . XO = 1, . One has limn- E[Xn] = co. Then its extinction probability is equal to zero. YES NO8 Branching Processes Branching processes are used as a tool for modeling in genetics, biomolecular reproduction, population
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Please answer question A. Data on the fuel economy of several 2010 model vehicles are given in the accompanying table. Complete parts (a) and (b) below. Click the icon to view the table of fuel economy data. a) Find and interpret a 95% confidence interval for the gas mileage of 2010 vehicles. Select the correct choice below and fill in the answer
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A new cold medication claims that, on average, Individuals who take the medication recover within 3 days. Dr. Nelson believes the recovery time is longer. She surveys 15 people with colds who take the medication. She finds that their recovery time, in days, Is as follows: 3, 6, 4, 4, 6, 3, 3, 1, 2, 6, 3, 1, 3, 2, 4 Perform a hypothesis test using
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Pick the correct formal negation of the following statement: All Icelandic children learn English in school. Group of answer choices: No Icelandic children learn English in school. All Icelandic children do not learn English in school. At least one Icelandic child did not learn English in school. Icelandic children do not learn English in school.

Exam00666 In Marissa's calculus course, attendance counts for 5% of the grade, quizzes count for 10% of the grade, exams count for 60% of the grade, and the final exam counts for 25% of the grade. Marissa had a 100% average for attendance, 93% for quizzes, 82% for exams, and 81% on the final. Determine Marissa's course average. Marissa's course
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I need help for those questions please 1. Of 35 people eating lunch 15 are eating fried chicken. Determine the l. empirical probability that the next person in the cafeteria eats fried chicken for lunch. In exercises 2-4 each number 120 is written on a ball and placed in a bag. If one ball is selected at random from the bag, determine the
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Exercise 5.2. Consider a one-step market consisting of a bond and a stock. The price of The stock is .6 8 initially and can rise or fall by .8 1 at each time step. The bond has interest rate r = 5%. i. Calculate the price of a European call option on this stock with a strike price of 7.50. ii. Now consider a two-step market with the stock price
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a=2 b=8 The experiment consists in shooting a bow at the target twice. The targed consists of three rings (I, II, III). The hit probability for ring I is 0.25 for ring II is 0.6 and for ring III is 0.15. Hits are scored respectively: I for 2a points, II for 6 points and the third for b points. Let the random variable X be the sum of the points

Of the Co students enrolled in a statistics class last semester, 26 worked during the semester and 36 received financial assistance. 16 of those who received financial assistance also worked during the semester. Report arowers accurate to 4 decimal places. 1. What is the probability that a randomly selected student from the close a) did not
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Research Question: Is there a difference in the number of people who have an Annual pass to Disney World comparing people who live in Florida to those who do not. People who live in Florida (Group 1): Number of people have an annual pass to Disney World = 120 sample size of Group 1 = 350 People who do not live in Florida (Group 2): Number of

Assume that the random variable X is normally distributed, with mean u - 51 and standard deviation o = 8. Compute the probability. Be sure to draw a normal curve with the area corresponding to the probability shaded. P(X s 42) Which of the following shaded regions corresponds to P(X s 42)? O A. X B. c. O O X X P(X $ 42) = 2643 (Round to four
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Can you help me make a scatter plot? Chapter V 10. A researcher collected the following data for a sample of pregnant women who had previously used birth control. Years on Birth Control Time Until Pregnant (in days) 7.5 10.0 3.5 4.0 7.0 2.5 5.0 Draw a scatter plot of the data on Excel and copy and paste onto your Word document. Explain in detail.
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She has a random sample of 60 visitors during a week with the following results: The sample mean of purchase amount:42.8 litres Sample standard deviation purchase amount: 11.7 litres Out of the 60 visitors,11 of them purchased premium unleaded petrol. 1. a) Consider a null hypothesis that the mean purchase is 38 litres (and the alternative

stats question A pollster wants to support the claim that more than 70% of California adults are concerned about the spread of the New Coronavirus. . State the Alternative Hypothesis in the context of the problem: [ Select ] . State the Null and Alternative Hypotheses using the appropriate population parameters: o Null Hypothesis: [ Select ] o
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PSY230 INTRO TO STATISTICS Question 41 There is more than one kind of correlation coefcient, true or false. 0 0 true 0 false Question 42 Which of the following is NOT a form of reliability? 0 inter-rater reliability 0 content reliability 0 parallel forms reliability O test-retest reliability D Question 43 2 pts Cronbach's alpha refers to of
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2 3 4 5 6 7 8 9 10 Use the ALEKS calculator to solve the following problems. (a) Consider a t distribution with 4 degrees of freedom. Compute P( 1.85 c) - 0.01. Round your answer to at least three decimal places. c = 1
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Assume that the joint distribution of the life times X and Y of two electronic components has the joint density function given by f ( x, y) = 2 -1
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A major software company wants to open an office in Canada. Given the demand for skilled computer professionals, this company must provide a competitive living environment. The last criterion to consider is air quality. Air quality index values are presented in Table 1 below. Table 1. Air quality indexes for Montreal, Ottawa, and Vancouver
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Listed are 32 ages for Academy Award winning best actors in order from smallest to largest. (Round your answers to the nearest whole number.) 18; 18; 21; 22; 25; 26; 27; 29; 30; 31; 31; 33; 36; 37; 37; 41; 42; 47; 52; 55; 57; 58; 62; 64; 67; 69; 71; 72; 73; 74; 76; 77 (a) Find the percentile of 37. 33 x th percentile (b) Find the percentile of 74.
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A farmer divided his piece of land into4 equivalent groups. The quality of the soil is the same across the4 groups of land. He planted the same crop in all4 groups of landand recorded the yield of the crop in all4 groups for a4 week period. Is the study observational or experimental? If it is an experiment, what is the controlled factor? Select

Indicate the type of statistical test to be used, with justification. The following are the ages (years) and systolic blood pressures of 20 apparently healthy adults. A researcher wants to know if there is a relationship between the two variables. 131' (Y) I28 BPH') Ase (X) Age on 43 [28 53 I36 63 I41 70 I46 (Continued ) A8900 HP (1') A8000 31'
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Assume there is a certain population of fish in a pond whose growth is described by the logistic equation. It is estimated that the carrying capacity for the pond is 1200 fish. Absent constraints, the population would grow by 120% per year. If the starting population is given by po = 600, then after one breeding season the population of the pond
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pls help with hw question One year, the mean age of an inmate on death row was 40.9 years. A sociologist wondered whether the mean age of a death-row inmate has changed since then. She randomly selects 32 death-row inmates and finds that their mean age is 40.1, with a standard deviation of 8.4. Construct a 95% confidence interval about the mean
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Suppose that on Monday, 7 July, you assume a long position in one December British pound futures contract at the futures price of $1.20/. The initial margin is $2,000, and the maintenance margin is $1,500. The contract size is 125,000. Assume you do not withdraw excess money from your margin balance. All margin requirements are met with cash. You

ANSWER PLEASE The temperature, To , of a swimming pool has a mean of 25 degrees Celsius and standard deviation of 2 degrees Celsius What do you expect the temperature of the swimming pool to be in degrees Fahrenheit? Note: TF = 1.8 x To + 32 Question 9 A fire station receives on average 12 emergency calls per day, where each call is independent of
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Aspirin is packed in 120 tab bottles with weight normally distributed with mean 600 g and standard deviation 6 g. We want to figure out what is the probability that a bottle of aspirin randomly picked from the production batch will weigh 593 g or less. To solve this problem we need to standardize our data. 1) Do we have to calculate one z-score or
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Question 21 These box plots display the distribution of the height of the boys and girls in the 7th grade class. 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 Heights of Boys Q 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 Heights of Girls Q Comparing their Minimums, which distribution has the larger minimum? O boys O girls
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5. Consider a finite state discrete time Markov chain {Xx} on three states S1, S2, S3 with the transition matrix P = ONHAIK (a) Find a stationary distribution 7 for P. Is it unique? (b) Is this Markov chain aperiodic? Is it irreducible? (c) Suppose that to = (P(Xo = S1), P(Xo = S2), P(Xo = S3)) = (3, 31 3) is the probability mass function at time
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In a survey of 800 college students In the United States, 608 indicated that they believe that a student or faculty member on campus who uses language considered racist, sexist, homophobic, or offensive should be subject to disciplinary action. Assuming that the sample is representative of college students in the United States, construct a 95%
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Unit Z. Chapter / Practice Progress sa Score: 1.68/5 3/4 answered Question 4 It is known that 22% of people ride public transport without paying for it. We talk to 61 people who have been on public transport in the last month. What is the probability that the sample proportion is more than 16%? (Enter your answer as a number accurate to 4 decimal
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Find the p-value. a wwwawn.connectmath.com Ei McGraw-Hill Connect Math ~. w .l Effectiveness of New Drug To test the effectiveness of a new drug, a researcher gives one group of randomly selected individuals the new drug and another group of randomly selected individuals a placebo. The results of the study are shown here. At u= 0.10, can the
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1. What causes volatility? Explain the basic assumption and research supported view. 2. What does normal distribution mean and whether it applies to most of the market variables? Explain. 3. What assumption underlies the GARCH model in regard to volatility? 4. The volatility of an asset is 3% per day. What is the standard deviation of the

Watch the video by Hans Rosling titled "Let My Dataset Change Your Mindset" https://www.ted.com/talks/hans_rosling_let_my_dataset_change_your_mindset?language=en#t-36170 Describe the "We" versus "Them" discussion in the video in your own words. In the video, there is a scatter diagram drawn between life expectancy and children per woman. Which

1. A factory produces LED bulbs with an average lifespan of 52,000 hours and a standard deviation of 5000 hours. A) What is the probability that a randomly selected bulb will last for less than 50,000 hours? B) In a batch of 100,000 bulbs, how many do you expect to last for less than 50,000 hours? [Hint: this is a job for the Np shortcut! Be sure

exercises Statistics Use Pearson correlation in all these exercises. In these exercises, use n instead of n -1. These samples are not closed. 1. In this table there are values for two variables x and y. (n = 6) i x y 1 1 2.5 2 3 3 3 4 6 4 6 5 5 7 7.5 6 8 8 Calculate correlation r. 2. x y 3 2 4 5 6 5 11 12 Calculate correlation r. 3. x y 50 3 10 0

I would like to know if my answer on the second part of the question is correct or not. The answer options for the second part of the question is in the second photo. Sample A Sample B Sample C \\/ Sample D All of the samples show at least some evidence for the claim Question 2 Answer saved Marked out of 2.00 'l' Remove flag Four different samples
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Company ABC always misses the shipment for their lasers to one of her client, due to fluctuations in their demand in last minutes and the manufacturing process for lasers including three steps: submount assembly, module assembly and final test. Parts that successfully pass through one step go on to the next step. Those parts that fail are

For questions 8-18, refer to the following information: Cortical thickness of the tibia is a useful measure of bone health in children with pediatric renal disease. A preliminary study of cortical thickness was conducted on healthy children to develop an understanding of healthy bone structure for a future study on children from a similar
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Because you are not feeling well you do a medical test for a certain disease. For that test statistics show that patients who have this disease test positive 97% of the time, while patients who do not have the disease test positive 0.05% of the time. The test can therefore be considered as very accurate. It is estimated that currently 10% of the

Research Scenario: In this fictitious scenario based on a study by Inzlicht and colleagues (2006), researchers examined whether sensitivitiy to race-based prejudice is related to self-regulation abilities in Black college students. They predicted that higher sensitivity to prejudice is related to lower self-regulation ability. Black university

How to determined hypothesis testing for two means? 0 PM Sun 27 Jun a author.uthm.edu.my A author UTHM ACADEMIC ONLINE RESOURCES QUESTION 1 The manager of computer operations of a large company wants to study computer usage of two departments within the company- the accounting department and the research department. A random sample of five jobs
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a. A chocolate company produce chocolate bars, which have a mean fat content of 70 grams and a standard deviation of 0.8 grams. a) bi Calculate the probability of a chocolate bar being chosen at random, to contain more than 71 grams of fat {2 marks) Estimate the number of chocolate bars from a sample of 500 to therefore have a fat content of more
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For all examples, we will assume an alpha of 0.05. 1. You andafriendareplanningtouseacoininordertodecidewhogetstogoonafree vacation. The winner of a coin toss will win the trip. liloiilliever1| prior to the coin toss, you want to check to make sure the coin is fair. You therefore wish to use a Chi- Sqnare Goodness of Fit test, along with a
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Name: Probability: Group Problem Set 3 Directions: 1. Solve the following problems. Hand-write your solutions and explanations on your own paper (either standard notebook size (8x10.5) or standard typing size (8.5x11)). 2. You may use a pen or a pencil. The writing must be dark enough to be read easily. 3. Show your work and explain your reasoning
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Q.8, DO IT FAST PLS A hotel claims that 90% of its customers are very satisfied with its service. Complete parts a through d below based on a random sample of eight customers. a. What is the probability that exactly seven customers are very satisfied? (Round to four decimal places as needed.) b. What is the probability that more than seven
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Since you do not have superior information relative to others, especially the financial institutions, you plan to invest in a broad market index which contains all stocks traded (after screening for SHRCD and PRIMEXCH). Calculate the monthly equal-weighted average return from the beginning to the end of the sample period. (Please define the

Bb MyMathLab - J-MATH201008 x Take a Test - Ronnie Greene X C Consider The Following Pair C * *[Solved] Consider the followir X * W3 q4.png X + X -) C mathxl.com/Student/PlayerTest.aspx?testld=236472059 : Apps Bb Login YouTube . Maps G Gmail Bb Welcome - Blackbo.. Reading list J-MATH201008-ONOD-nov032021 - College Mathematics - K. Akam Ronnie
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A population of values has a normal distribution with u = 148.2 and o = 69.1. You intend to draw a random sample of size n = 234. Find the probability that a sample of size n = 234 is randomly selected with a mean less than 137.8. P(a
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Question 7 0/1 pt A researcher gathered data on hours of video games played by school-aged children and young adults. She collected the following data: 6 13 15 15 9 7 3 10 15 17 6 0 12 9 15 15 17 0 3 14 13 14 5 12 14 12 13 6 (a) Complete the frequency distribution for the data. Hours Frequency |Relative Frequency 0-2 3-5 6-8 9-11 12-14 15-17 (b)
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d. Predict the appraised value for a house that has a land area of [1.15 acres and is 25 years old. 55D thousand (Round to two decimal places as needed.) e. Construct a 95% condence interval estimate for the the mean appraised value for houses that have a land area of 0.15 acres and is 25 years old. $D thousand S mean appraised value 3 SEE
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PLEASE HELPPP A data set about speed dating includes "like" ratings of male dates made by the female dates. The summary statistics are n = 194, x =5.88, s=2.28. Use a 0.05 significance level to test the claim that the population mean of such ratings is less than 6.00. Assume that a simple random sample has been selected. Identify the null and
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INDICATE TRUE OR FALSE IN THE FOLLOWING: 1). Although a normal distribution has a "bell" shape, not all "bell" shaped distributions are normal distributions. 2). A normal distribution is completely described by two quantities: mean and standard deviation. 3). slightly more than 2/3 of the data occur within 1 standard deviation from the mean in a

Question 2: Assume that the colors of M&M's have the following distribution: blue and orange (20% each), red, yellow, green, and brown(15% each). You grab randomly into a bag of M&M's. a. The bag contains 20 M&M's. What is the probability that 3 out of the 10 you grab (without replacement, since you eat them) are blue? b. If the bag has 40 pieces,
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Can you please answer me if it's A, B, C or D? Homework: Section 6.1 Part 1 of 2 O Points: 0 of 1 Save Assume that a randomly selected subject is given a bone density test. Bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find P16, the 16th percentile. This is the bone density score
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6. True or False? A clinical trial is conducted to compare an experimental medication to placebo to reduce the symptoms of asthma. One hundred participants are enrolled in the study and randomized to receive either the experimental medication or placebo. The primary outcome is self-reported reduction of symptoms. Among 50 participants who receive

Do Teen Problems Differ Based on Income Level? A survey asked US teens whether they consider anxiety/depression a major problem among their peers. The table below shows the results of whether teens said it was a major problem or not, based on household income level of the teens. Income Major Not major Total problem problem Less than $75,000 386
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c) Suppose that we randomly select 5 samples (each of size n = 10) fromthis population. What is the probability that at most one of the five samples will have an average body size that is less than 57 cm
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2.) The following is the number minutes 16 - 18 year olds reported spending on social media in one day Number of Minutes 16 - 18 Year Olds Spend on Social Media in One Day 85 110 120 110 75 68 65 72 125 125 62 67 82 129 98 65 72 108 96 112 69 86 100 115 (a) Use the table to create a Frequency Table to simplify the data. Number of Minutes Spent on
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11 12 13 14 15 16 17 18 19 20 22 207 170 151 138 172 234 173 135 131 140 178 147
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solve please 7. Suppose that the joint probability density function of two random variables X and Y is Ax, y) = c(xty) for x between 0 and 2, and for y between 0 and 1, and zero off of this rectangle. Determine the conditional density of Y given X. (Note that you will have to work out the value of the constant c to complete this problem.) 8.
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Assignment so E. Attempt 4 Use the Statistical Applet: Normal Density Curve to answer the question. Set the mean and standard deviation to O and 5, respectively. Find the value for which approximately 5% of the area under the normal curve lies to the right of this value. Enter your answer accurate to one decimal place. 0.8 value: Incorrect
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Research Question.Null and Alternative Hypotheses.Specify the alpha level. The research question, null and alternative hypothesis, and the scatterplot will be the same whether you are conducting a Pearson Correlation or a Linear Regression. Part 2: Pearson Correlation Compute the Pearson Correlation using 10 scores and indicate what 10 scores you

Please may I get some help! I'm really confused ! Chapter 3: Discrete random variables and their probability distributions (a) The probability that a driver order is late is 0.05. Three orders are placed far enough apart in time that they can be considered to be independent events. (i) What is the probability that all are on time? (3) (ii) What is
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Issue: Suppose that a couple will have 3 young people. Acknowledge that the probability of having a young woman is .487 and the probability of having a child is .513. Furthermore expect that x is a self-assertive variable for the amount of young women and find the probability where x is 0, 1, 2, or 3. Every together word, answer the going with
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Question 3 0/3 pts 9 3 99 @ Details For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 25 students, and the distribution of total study hours per week is bell-shaped with a mean of 12 hours and a standard deviation of 2.5 hours. Use the Empirical Rule to answer the following
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10. A nuclear power facility produces a vast amount of heat which is usually discharged into aquatic systems. This heat raises the temperature of the aquatic system resulting in a greater concentration of chlorophyll, which in turn extends the growing season. TO study this effect, water samples were collected monthly at 3 stations for a period of
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I need an explanation on how to do each part please 5. [-/1 Points] DETAILS BBBASICSTAT8 6.R.010.S. MY NOTES ASK YOUR TEACHER Isle Royale, an island in Lake Superior, has provided an important study site of wolves and their prey. Of special interest is the study of the number of moose killed by wolves. In the period from 1958 to 1974, there were
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c Calendar My MCBS Library Probability and Statistics mer Session II 2021/MAT 105/E3 / Assessments / Assignment No 2 At a convention there are 7 mathematics instructors, 5 computer science instructors, 4 statistics instructors, and 5 science instructors. If an instructor is selected, find the probability of getting a science instructor or a math
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Assume that cans of cola are filled such that the actual amounts have a population mean of =16.00 ounces. A random sample of 49 cans has a mean amount of 16.37 ounces. The distribution of sample means of size n=49 is normal with an assumed mean of 16.00 ounces, and those sample means have a standard deviation of 0.05 ounce. Complete parts(a)

Full-time college students report spending a mean of 28 hours per week on academic activities, both inside and outside the classroom Assume the standard deviation of time spent on academic activities is 5 hours, Complete parts (a) through (d) below a. If you select a random sample of 25 full-time college students, what is the probability that the
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ejercicio estadistica CORRELACION, REGRESION LINEAL y SERIES DE TIEMPO 3. El departamento de Servicios Estudiantiles de una Universidad local desea demostrar la relacion entre al numero de cervezas que consume un estudiante y su contenido de alcohol en la sangre. Una muestra de 9 estudiantes participo en un estudio en el cual a cada uno se le
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Question / 1 pts A survey by a magazine stated that 14% of men said they used exercise to reduce stress. A random sample of 100 men was selected and 10 said that they used exercise to relieve stress. Test the claim using a = 0.10. O There is enough evidence to reject the null hypothesis. The claim is true. O There is enough evidence to reject the
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II. Proposal A. Goals : What are the goals of this initiative ? H ow do they align with the organization al missio n? A nd how do you plan to measure success? Be sure to consider the progress and pathway for data analytics projects of the type you chose to propose. B. Data Analytics Life C ycle: Apply the data analytics life cycle to your proposed

The records of a casualty insurance company show that, in the past, its clients have had a mean of 1.9 auto accidents per day with a standard deviation of 0.04. The actuaries of the company claim that the standard deviation of the number of accidents per day is no longer equal to 0.04. Suppose that we want to carry out a hypothesis test to see if
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Students want to maximize their score on the next test and nd out if more hours of studying (measured in 10's) increases their test score measured in 100's of points. They run a regression using study time and test score for a sample of 55 students. The regression results are below. Response = test score in Points measured in 100's and predictor:
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1. Complete the table below and use the data to construct a frequency polygon Class limits Boundaries Midpoint (Xm) Frequency Cumulative (f) frequency 15-19 5 20-24 17 25-29 21 30-34 5 35-39 22. Complete the table below and use appropriate columns to construct a frequency polygon on Geogle sheets Classes Class Boundaries Mid pelntptm) Frequency
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The following output is from a single factor ANOVA test: SUMMARY Groups Count Sum Mean Variance Group 1 53 10.6 1.3 Group 2 66 13.2 1.7 Group 3 49 9.8 0.7 ANOVA Source of Variation SS of Variance F-test F-crit Between Groups 31.600 2 15.80 12.81 3.89 Within Groups 14.800 12 1.23 Total 46.400 14 a) Are there significant differences between the
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A telephone poll of 1178 adult Americans was reported in an issue of Time Magazine. One of the questions asked was, "What is the main problem facing the country?" Thirty-four percent answered, "crime." Construct a 96% confidence interval for the population proportion of Americans who feel that crime is the main problem. p N R Margin of Error: E We
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In a small town called Tatooine, the local beerbrewery "Mos Eisley Cantina"is planning to send out an electronic promotion campaign with a free drink code to boost attendance for their Thursday night happy hour. The data for their past efforts is given in the file Tatooine.txt where 1 indicates a response/show and 0 indicates a no response/show.

In this question, we consider the marketing dataset from datarium package in R. install . packages (\"datarium\") library (datarium) data (market ing) The data contains 200 observations and 4 variables. The response variable is sales, denoted as Y. The explanatory variablesmeasured in thousands of dollarsare advertising budget spent on youtube1
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The owner of a chain of mini-markets wants to compare the sales performance of two of her stores, Store 1 and Store 2. Though the two stores have been comparable in the past, the owner has made several improvements to Store 1 and wishes to see if the improvements have made Store 1 more popular than Store 2. Sales can vary considerably depending on
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Question 6 (5 points) ListenReadSpeaker webReader: Listen The following data exhibits a SEASONAL WITH A TREND pattern. Use an appropriate forecasting method to answer the questions below: Year Quarter Sales 1 1 266 2 200 3 248 4 296 2 1 296 2 248 3 302 4 340 3 1 317 2 306 3 319 4 375 4 1 354 2 332 3 385 4 405 5 1 404 2 373 3 405 4 455 1)State the

2. The LEAD 5700 sample data also tells us which College of Education department each student belongs to (COEProgram). Using that data, determine whether there is a significant difference in final exam scores (Score) based on a students' department (COEProgram). a. What test did you use (correlation, ANOVA, paired samples t-test, or independent

#12T _ . This test: 100 point(s) possible . Test. Week 3... Question 12 of 20 > This question: 5 pointts) possible (33 Submit test The ages of a group of 138 randomly selected adult iemales have a standard deviation of 16.5 years. Assume that the ages of female statistics students have less variation than ages of females in the general population,
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Hypothesis testing begins with an assumption about the population parameter. To test the validity of the assumption we gather sample data and determine the difference between the hypothesized value and the actual value. We then judge whether the difference is significant. The smaller the difference the greater the likelihood that our hypothesized

` 1. [-/4 Points] DETAILS MY NOTES ASK YOUR TEACHER A soft-drink bottling company fills and ships soda in plastic bottles with a target volume of 354 milliliters. The filling machinery does not deliver a perfectly consistent volume of liquid to each bottle, and the three quartiles for the fill volume are Q1 = 356, Q2 = 360, and Q3 = 361. (a) Find
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34. A boy picks a ball from a box randomly. This box contains 4 white balls and 2 red balls. If he picks a white ball, he will pick one more ball without returning the white belt to the box w Let A be an event that the rst ball is white. Let B be an event that the second ball is white. a. Find the probability of A. b. Find the probability of B. c.
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The average lifespan of a Ghanaian is 57years. The average lifespan of males in Ghana is known to be 55 years while the average lifespan of females in Ghana is known to be 60 years. The average lifespan of people from the Northern region of Ghana is known to be 58 years while the average lifespan of people in the East region of Ghana is known to

help thanks This question: 1 point(s) possible In a survey of 2828 adults, 1463 say they have started paying bills online in the last year. Construct a 99% confidence interval for the population proportion. Interpret the results, A 99% confidence interval for the population proportion is() (Round to three decimal places as needed.) Interpret your
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1. For Spring 2021, MAT 152 Test 1 grades were skewed to the left with a mean of 80.9 and a standard deviation of 11.6. A statistics teacher takes a sample of his 62 students' grades. (A) Calculate the probability the mean of the 62 test grades was at most 79.5. (8pts) (B) What mean separates the highest 15% of means from the rest of the means?

Vanable Colly Final Reduced Objective Allowable Allowable Name Value Cost Coellicient Increase Decrease Type A 5 Type B 5 3 Type C 1E-30 Constraints Final Shadow Constraint Allowable Allowable Cell Name Value Price R.H. Side Increase Decrease Wood 1 32 15 20 10 Sige! 40 25 30 45 hours 3 15 38 18+30 35 a) What is the expected profit if the
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Researchers wanted to test the hypothesis that living in the country is better for your lungs than living in a city. To eliminate the possible variation due to genetic differences, they located seven pairs of identical twins with one member of each twin living in the country, the other in a city. For each person, they measured the percentage of

7. A certain type of vaccine is known to be only 25% effective after a period of 2 years. To determine if a new vaccine is superior in providing prote against the same virus for a longer period of time, a study consisting of 20 randomly chosen people were inoculated, and the efficiency of the vac measured after 2 years.Which of the following
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