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Mathematics Questions and Answers February 22, 2021

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1. The frequency distribution shows a summary of the scores from a Mathematics exam at a local high school. Twenty students took the exam. Exam Scores Frequency Relative Cumulative Cumulative Frequency Frequency Relative Frequency 50 to less than 60 0.05 0.05 60 to less than 70 0.15 4 0.20 70 to less than 80 4 0.20 8 0.40 80 to less than 90 --J
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3 3 - y = 4 4

The accompanying data are the number of wins and the earned run averages (mean number of earned runs allowed per nine innings pitched) for eight baseball pitchers in a recent season. Find the equation of the regression line. Then construct a scatter plot of the data and draw the regression line. Then use the regression equation to predict the
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AnswersType II ErrorCorrect decision Type I Error Select the appropriate outcome for each decision/truth scenario in the table below: Ho is False Ho is True Fail to Select an answer v Select an answer reject Ho Reject Select an answer v Select an answer Ho
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I am lost on how to solve this questions, please help Question / (1 point) Students at a high school are asked to evaluate their experience in the class at the end of each school year. The courses are evaluated on a 1-4 scale - with 4 being the best experience possible. In the History Department, the courses typically are evaluated at 10% 1's, 15%
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The PTA sells 1000 tickets for $5 each. One ticket will be randomly selected, and the winner will receive an iPhone 11 valued at $700. Create probability distribution for the raffle in order to answer the following: a) Find the expected value for a person that buys one ticket. b) What price should the PTA charge if they want to make this raffle

The probability that Jacqueline will be elected to the students' council is 0.6, and the probability that she will be selected to represent her school in a public-speaking contest is 0.75. The probability of Jacqueline achieving both of these goals is 0.5 a)Are these two goals mutually exclusive? Explain your answer. b)Are these two goals

A community college wants to analyze the age and GPA of its students. Here is the data: Age 18 40 25 38 44 19 51 28 31 21 24 GPA 2.9 3.3 2.0 3.9 3.7 2.7 3.9 3.5 1.9 2.9 3.4 Can we say that there is a significant relationship between these variables? (Use = .05) Type of Test: Null Hypothesis: Alternate Hypothesis: SE: Test Statistic: P-value:

Last year, a local television station determined that 65% of the people who watch news at 11:00 pm watch its station. The station's management believes that the current audience share may have changed. In an attempt to determine whether the audience share had in fact changed the station questioned a random sample of 180 local viewers and found

also what is P Tweet tweet: An article reported that 73% of companies have Twitter accounts. An economist thinks the percentage is higher at technology companies. She samples 70 technology companies and finds that 58 of them have Twitter accounts. Can she conclude that more than 73% of technology companies have Twitter accounts? Use the a = 0.10
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PLEASE SHOW ALL YOUR WORK AND NEAT HAND WRITING ONLY!! CIRCLE ALL ANSWERS! TRY TO BE DONE WITH THIS BEFORE 11:00 3.5 Implicit Differentiation & 3.6 Logarithmic Differentiation NAME A. Use implicit differentiation to find the derivative of y(x2 + 4 ) =8 B. Use logarithmic differentiation to find the derivative of : y = (sin x ) In a
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Please use code: install.packages("faraway") library(faraway) data(aatemp) to access the data in r studio. Problem 2 The aatemp data in the faraway library.r comes from the U.S. Historical Climatological Network. The data report annual mean temperatures in Ann Arbor Michigan for roughly 150 years. a) With temp as the response, t a regression
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A population of values has a normal distribution with u = 95.1 and o = 50.4. You intend to draw a random sample of size n = 105. Find Pzo, which is the mean separating the bottom 20% means from the top 80% means. P20 (for sample means) = Enter your answers as numbers accurate to 1 decimal place. Answers obtained using exact z-scores or z- scores
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4 In a study of 808 randomly selected medical malpractice lawsuits, it was found that 479 of them were dropped or dismissed. Use a 0.05 significance level to test the claim that most medical malpractice lawsuits are dropped or dismissed, Which of the following is the hypothesis test to be conducted? O A. Ho : P #0.5 O B. Ho: p > 0.5 H, : p = 0.5
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El dictamen del auditor es el documento que suscribe el contador pblico conforme a las normas de su profesin relativo a la naturaleza, y al alcance y resultado del examen realizados sobre los estados financieros de la entidad que se trate. La finalidad del examen de estados financieros. es expresar una opinin profesional independiente respecto. As

A student reads that a survey reports that "we are 90% confident that the average score of Asian American students on the 2017 SAT is between 800 and 1400". Asked to explain the student says "90% of Asian American students scored between 800 and 1410". 1) Is the student correct? Yes or No? Why? 2) put your own explanation. 3) What is the average

please solve If a ball has a Ellcentimeter diameter, then I 4lrd x): 5:3 1010(2 + 3 determines the depth That it sinks in water. The constant d is The density of The hall, where the density of water is 1. The smallest positive zero of Ex} equals the depTh that the ball sinks. Approximate This depth for d = 0.9. The ball sinks to a depth of
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The Johnsons Change Their Life Insurance Coverage Harry and Belinda Johnson spend $20 per month on life insurance in the form of a premium on a $10,000, paid-at-65 cash-value policy on Harry that his parents bought for him years ago. Belinda has a group term i-surance policy from her employer with a face amount of $200,000. By choosing a group
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5. The average wait time for patients using a telephone health referral and advisement service to speak with a public health nurse is 52 minutes with a standard deviation of 19 minutes. If a sample of 80 patients who contacted the telephone health service on a given day are randomly selected and their wait time is recorded, within what range of

According to the information that comes with a certain prescription drug, when taking this drug, there is a 23% chance of experiencing nausea (N) and a 41% chance of experiencing decreased sexual drive (D). The information also states that there is a 11% chance of experiencing both side effects. What is the probability of experiencing neither of

Researchers investigated how the size of a bowl affects how much ice cream people tend to scoop for themselves. People were randomly given either a 17 oz or a 34 oz bowl, and were invited to scoop as much ice cream as they liked. Did the bowl size change the selected portion size? The summaries are shown to the right. Test Small Bowl Large Bowl an
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The Johnsons Change Their Life Insurance Coverage Harry and Belinda Johnson spend $20 per month on life insurance in the form of a premium on a $10,000, paid-at-65 cash-value policy on Harry that his parents bought for him years ago. Belinda has a group term i-surance policy from her employer with a face amount of $200,000. By choosing a group
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12. The producer of a specific kind of vehicle asserts that the motors in these vehicles can run for 100,000 miles without requiring an oil change. To test this case, a buyer association intends to choose an arbitrary example of these vehicles and run them for 100,000 miles without an oil change, taking note of if any of the vehicles experience
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The present study shows the number of basketball games played by each player in the NBA playoffs 2017/2018. A sports analyst is interested in analyzing the data and finding some statistical measures.We will describe the data using a frequency distribution and a relative frequency distribution. We will use an Excel function to sum up the data. We

>>>>>>>>>>>>>>>>>>>> Let X denote the proportion of allotted time that a randomly selected student spends working on a certain aptitude test. Suppose the pdf of X is f (I; 0) = 0, otherwise where -1
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LetX be an exponential random variable with parameter=2 . Find the values of the following. Use 'e' for the base of the natural logarithm E[(3X+1)^2] = ? P(1X2) = ?

A new mother keeps track of the time when her baby wakes up each morning. What is the level of measurement of the data? Select the correct answer below: nominal ordinal interval

Sophie wanted to know if sons of taller fathers tend to be taller. She collected data about the heights of a random sample of 110 men and about their fathers' heights. Here is computer output from a least-squares regression analysis on her sample: Predictor Coef SE Coef T P Constant 100.64 10.1 9.960 0.000 Father's height 0.431 0.059 7.369 0.000 S
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Q.3.1 The following contingency table gives the results of a sample survey of South African male & female respondents with regard to their regular mode of transport: REGULAR MODE OF TRANSPORT Car Bus Taxi TOTAL No. of Females No. of Males TOTAL 50 100 10160 75 95 70240 125 195 80 400 Q.3.1.1 Q.3.1.2 Q.3.1.3 What is the probability of randomly

Transition Probability A Markov chain with state space {1, 2, 3} has transition probability matrix 0.6 0.3 0.1\\ P. = 0.3 0.3 0.4 0.4 0.1 0.5 (a) Is this Markov chain irreducible? Is the Markov chain recurrent or transient? Explain your answers. (b) What is the period of state 1? Hence deduce the period of the remaining states. Does this Markov
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2. (18 marks) Of all students entrolled at a large undergraduate university, 19% are seniors, 23% are juniors, 27% are sophomores, and 31% are freshmen. A sample of 200 students taken from this university by the student senate to conduct a survey includes 50 seniors, 46 juniors, 55 sophomores, and 49 freshmen. Using the 0.1 signcanee level, test
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A grocery store owner claims that the mean amount spent per checkout is more than. A test is made of H 0 : = 85 versus H 1 : > 85. The null hypothesis is not rejected. State the appropriate conclusion. Question 6 options: There is not enough evidence to conclude that the mean checkout price is greater than. The mean checkout amount is less than or

check Mrs Reena has regularly contacted three companies (A, B and C) for her quarterly servicing of aircons. If A services her aircons, the probability that there will be no problem with the aircons in the next quarter is 0.8. The same probability for B is 0.7 and for C is 0.6. If all her aircons do not show any problems, she will engage the same
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For questions 9-12, use the following information. Of students surveyed at the University STI Clinic, 80 were diagnosed with syphilis, 75 were diagnosed with gonorrhea, and 65 had herpes. 30 students were syphilis and gonorrhea, 25 were diagnosed with syphilis and herpes, and 10 were diagnosed with gonorrhea and herpes. Only 5 were diagnosed with

6 Safari File Edit View History Bookmarks Window Help webassignmet (5 '_ ,. ., , ., ,, o 111 If] m m- 7 iv Favorites Zimbra 9. Amazon 1h RCC I sec 0 Google A report describes results of a survey of nearly 2,000 oollege faculty. The report Indicates the following. 30.8% reported that they use Twitter and 69.2% said that they did not use Twitter. Of
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Patients suffering from rheumatic diseases or osteoporosis often suffer critical losses in bone mineral density (BMD). Alendronate is one medication prescribed to build or prevent further loss of BMD. Holcomb and Rothenberg (A-3) looked at 96 women taking alendronate to determine if a difference existed in the mean percent change in BMD among five
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Q1. Think of two teams playing a bunch of matches. The series stops when one team wins 2 matches. Each time they play, independently, there's a chance p that team T wins. Assume that the random variable, X, is the number of games played. Find E(X).

Safari File Edit View History Bookmarks Window Help ONE X 100% 27 Thu 10:39 PM Q E . . . O webassign.net C Grades: View Microsoft Office Home Grades: View Final Exam Review: Modules 1 - 10 & 1... In A Small City, Approximately 28% Of... Course Hero + Sale Price Size Land-to- OO Property ( millions thousands Building of dollars) of sq. ft.) Ratio
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Can I have help with this? A random sample of :11 = 89 organically grown potatoes had a sample mean weight of f1 = 3.8 ounces. Previous study shows the population standard deviation 0'1 = 0.9 ounces. A random sample of n; = 75 not organically grown potatoes had a sample mean weight of f2 = 4.1 ounces. Previous study shows the population standard
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Unit 3 Chapter 8: Lesson 8.3 Assignment Score: 0/4 0/4 answered . Question 3 v A political candidate has asked his/ her assistant to conduct a poll to determine the percentage of people in the community that supports him/ her. If the candidate wants a 3% margin of error at a 95% confidence level, what size of sample is needed? Be sure to round
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A credit bureau analysis of undergraduate students' credit records found that the average number of credit cards in an undergraduate's wallet was 4.08. It was also reported that in a random sample of 139 undergraduates, the sample mean number of credit cards that the students said they carried was 2.5. The sample standard deviation was not

20 responses of variable 1 (GENDER) 1= FEMALE and 2= male variable 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 1 10 1 11 2 12 2 13 2 14 2 15 2 16 1 17 1 18 1 19 1 20 1 Problem 3a. Construct a 96% confidence interval estimate for the true population proportion of Variable 1's customers that have the attribute represented by the "1" code, based on the 20

The data show the number of viewers for television stars with certain salaries. Find the regression equation, letting salary be the independent (x) variable. Find the best predicted number of viewers for a television star with a salary of $6 million. Is the result close to the actual number of viewers, 7.9 million? Use a significance level of

9 10 11 12 13 14 15 16 18 19 20 The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an average (mean) of 1.85 pounds with a standard deviation of 1.05 pounds. In a recent study, a group of 60 people who used this pill were interviewed. The study revealed that these people lost a mean of 1.7 pounds after
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theory in on part F questions follow it. Question 25 (2 points) The test statistic for this hypothesis test would be 0 z: = 2.04 O z: = 1.25 O :1 = 1.45 O :2 = 2.31 Question 26 (1 point) The conclusion from this hypothesis test would be that because the test statistic is 0 larger than the critical value. we can conclude that the average credit
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Determine the null hypothesis and the alternative hypothesis: A b2b Marketing INsider blog of OCtober 7,2010 examined five currently used sales closing techniques. Sales scenarios are presented to a sample of 230 purchasing executives. Eash subect received one of the five closing techniques or a scenario in which no sales close was achieved. After

Answer this please Moving to the next question prevents changes to this answer Question 3 Two normal distributions have a mean of 10, but one hasa standard deviation of 10and the other has astandard deviation of 2. Which of the following is true? The dispersions of the distributions are different O The distributions are from two different families
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Paragraph Styles Q1. Interpret the representation of the following statistical data Please select the correct answer. The distribution shown in the picture below has a . Positive skew Negative skew . Normal skew (Q2 a) Describe the general shape of a given scatter diagram, i.e.: correlation b) Draw and make a prediction on a line of best fit c)
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linear Programming NewCrest is looking to invest at most $500,000. The investment can be divided among three options. The return on each option depends on the economic outlook, which is shown in Table 1. For example, if the economic outlook is bright, investing $1 in option I will generate a gain of $3, and investing $1 in option II will result in
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Thanks guy he quantity of dissolved oxygen is a measure of water pollution in lakes, rivers, and streams. Water samples were taken at four different locations in river in an effort to determine if water pollution varied from location to location. Location I was 500 meters above an industrial plant water scharge point and near the shore. Location
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Please answer the question Two of the transistors of a E-transistor tape, two of which are defective, are randomly selected and checked. X random 1variable is the number of defective transistors among the 2 randomly selected transistors. a] nd the cumilative distribution function and probability distribution of?! random 1variable b} What is the
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Jim Macfarlane owns shares of stock in both Evergreen Company and Daylight Company. Jim has recorded the performance of these shares on each day for a 300 day period, observing whether the price of these shares has risen, fallen or remain unchanged. Assume the 300 day period is a good indication of the future, so we can use this data to determine
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2 Given are five observations for two variables, I and y. 4 A-Z 1 5 11 14 17 5. yi 7 17 9 26 23 6 O Develop the 90% confidence and prediction intervals when I = 13. 7. 6.6308 (to 4 decimals) 8. t-value 2.353 (to 3 decimals) 9 8.0659 * (to 4 decimals) E7- hited Spred 8.0659 * (to 4 decimals) N Confidence Interval for z = 13 11.48 27.62 ( to 2
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Unit 3 Assignment -Probability Distribution Part B: Thinking (10 marks) You win 13 points if you spin WIN and you will lose 8 points if you spin LOSS. What is the expected number of points earned per spin?[2 marks] WIN LOSS SS07 WIN NIM LOSS SSOT SSOT Consider the candy jar to the right. You reach in the jar and grab 7 candies. What is the
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Help solving please. Suppose college women's heights are normally distributed with a mean of 65 inches and a standard deviation of 2.5 inches. Blank #1: What height represents the 25th percentile? Round to the nearest tenth of an inch. Blank #2: What percentage of women are between 64 and 68 inches tall? Write your answer as a percentage and round
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Problem 3. Let X , Y be the number of points on two dice. Find the distribution of (a) the difference of the numbers of points X Y, (b) the maximum number of points. Problem 4. In the National Hockey League, each year the nal series of games is played between the two best teams. The series is played until one team wins 4 games, thus a maximum of 7
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Answer everything asked and show everything clearly. Propose your own condence interval for an unknown mean, unknown proportion, or unknown difference in means. Perform all the appropriate steps. Next propose and conduct your own test of hypotheses. You can test a single proportion, two proportions, at single mean, or compare two means for two
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In the field of drug addiction, age of onset (AOO)refers to when a person first starts using a drug.Research shows that the likelihood of developing an alcoholuse problem is higher the earlier the age of onset of drug use.There are many questionnaires designed to measure the level of alcohol abuse, and the researcher decides to use the AUDIT.The

please help with this question 11.2.1 Question Help V Fill in the blank below. A researcher wants to show the mean from population 1 is less than the mean from population 2 in matched-pairs data. If the observations from sample 1 are X; and the observations from sample 2 are Y, and dj = X; - Y;, then the null hypothesis is Ho: Ha = 0 and the
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Please help me with solving questions ( a) and ( b) . Provide all the steps to get to the final solution. The below table shows unemployment rates [9%) in different EU countries in 2017 [the data comes from Eurostat). The countries have been grouped into three categories: Y = 1 for Nordic countries; Y = 2 for Central- and Western-European
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Help needed on solution steps A medical research group is investing what differences might exist between two pain killing drugs Azerlieve and Zynumbie. The researchers have already established there is no difference between the two drugs in terms of the average amount of time required before they take effect. However, they are also interested in

Draw a game tree that accurately represents the following strategic situation: Two states, A and B, are engaged in an arms race. State A moves first and has the option to sign an arms control treaty (S) or not (S). B observes A's choice of whether or not to sign, and following either, may itself choose whether or not to sign (s) or (s). Following

Every week a company provides fruit for its office employees. They can choose from among five kinds of fruit. What is the probability distribution for the 30 pieces of fruit, in the order listed? Fruit Apples Bananas Lemons Oranges Pears Number of 6 2 10 8 4 pieces Probabilty OA 1 1 4 2 5' 15 ' 3' 15 15 OB. 1 1 4 2 5' 10 ' 3' 15 15 Oc. 1 1 1 4 2
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1 1.1 .19-T Question Help 7 In 1943, an organization surveyed 1100 adults and asked, "Are you a total abstainer from. or do you on occasion consume. alcoholic beverages?" 0f the 1100 adults surveyed, 374 indicated that they were total abstainers. In a recent survey. the same question was asked of 1100 adults and 308 indicated that they were total
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b . What is the probability a male respondent will say level of risk is important? c . What is the probability a female respondent will say level of risk is important? d . Is the level of risk independent of the gender of the respondent? Why or why not? e . Do male and female attitudes toward risk differ?umber of days. An analysis of company sales
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Describe and interpret the distribution of the variable below cou TuE dilu interpret the distribution of the variable below: t yet swered Statistics ints out of 01. (L1.) What is your age? 00 N Valid 3511 Flag Missing 119 Jestion Mean 53.86 Median 54.00 Mode 63 Std. Deviation 16.501 Minimum 18 Maximum 96 Percentiles 25 41.00 50 54.00 75 65.00
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Two groups of mice are observed during an experiment. Group A is gene-modified and has a mean concentration of neuropeptide Y 0.017 g/mL, with margin error ME . Group B is the control group which has no neuropeptide Y. Of the choices below, which one is a possible value for the ME , if we can state that the mean concentration is greater for

A group of realtors estimates that 23% of all homes purchased last year were considered investment properties. If a sample of 800 homes sold last year is obtained, what is the probability that at most 200 homes are going to be used as investment property? Round to four decimal places. O A. 0.4066 O B. 0.9099 O C. 0.0901 O D. 0.5935
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3. pg 533 Weeds among the corn Velvetleaf is a particularly annoying weed in cornfields. It produces lots of seeds, and the seeds wait in the soil for years until conditions are right for sprouting How many seeds do velvetleaf plants produce? The histogram shows the counts from a random sample of 28 plants that came up in a cornfield when no
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74. IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one individual is randomly chosen. Let X = IQ of an individual. a. X ~ b. Find the probability that the person has an IQ greater than 120. Include a sketch of the graph, and write a probability statement
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P(X > 40) = (Round to four decimal places as needed.)Assume the random variable X is normally distributed with mean u = 50 and standard deviation o = 7. Compute the probability. Be sure to draw a normal curve with the area corresponding to the probability shaded. P(X > 40) Which of the following normal curves corresponds to P(X > 40)? O A. O B. O
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The mean annual tuition fees in 2013-2014 academic year for a sample of 22 private colleges in California was $38,750 with a standard deviation of $7200. A dotplot shoes that it is reasonable to assume the population is approximately normal. Can you conclude that the mean tuition fees for protests institutions in California differs from $35,000?
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SECTION 12.2: FREQUENCY DISTRIBUTIONS AND STATISTICAL GRAPHS 1. Use the histogram below to answer the following questions. a. How many people were staying in the hotel? b. How many people in the hotel were between 41 and 50? c. How many people in the hotel were between 21 and 40? d. What percentage of people in the hotel were 20 or under? Hotel
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please help with this question 11.1.15 Question Help V Construct a confidence interval for p, - p2 at the given level of confidence. X1 = 35, n, = 241, X2 = 30, n2 = 289, 99% confidence The researchers are % confident the difference between the two population proportions, p, - p2, is between and (Use ascending order. Type an integer or decimal
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Microsoft Excel was used on a set of data involving the number of defective items found in a random sample of 46casesoflightbulbsproducedduring a morning shift at a plant. A manager wants to know if the mean number of defectivelightbulbsisgreaterthan20 during the morning shift. She will make her decision using a test with a level of significance

Score: 0.78 of 1 pt 10 of 17 (10 complete) HW Score: 57.52%, 9.78 of 17 pts 2.4.42 Question Help The distribution of the number of hours that a random sample of people spend doing chores per week is shown in the pie chart. Use 32 as the midpoint for "30+ hours." Make a frequency distribution for the data. Then use the table to estimate the sample
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Hi, How do I find the independent t value for the example shown in the picture? AutoSave . Off) Sample of 40 Individuals - Saved to this PC O Search A Chang, Elena Q CE X File Home Insert Design Layout References Mailings Review View Help Share Comments & Cut Calibri (Body) 11 ~ A" A Aa Ap AaBbCcDd AaBbCcDd AaBbC( AaBbCct Aa B Find AaBbCCD S'c
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(1). Give a couple of examples of categorical data arising in a medical research when the disease outcomes and patient characteristics are recorded: (2)In a research study, in the simplest settings, when an outcome is recorded as success/failure, or, yeso, the outcomes is known as the ____________outcome. (3)A _____________________distribution is
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Find the correct answer Bush Unit 7 Test: Statistics (Regular) Julian CALCULATOR COLOR THEME Q ZOOM ADD NOTE ) QUESTION GUIDE 31. Which situation does not yield data with variability? O The number of cars that go through the intersection of Stone Oak Parkway and Evans Road during different times of the day. The type of dog owned by students in Mr.
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USE THE BELOW IMAGE DATA TO ANSWER THE FOLLOWING QUESTIONS:1. WHAT IS THE GINI INDEX OF THE SWIMS = YES NODE?2. WHAT IS THE GINI INDEX OF SWIMS= NO NODE?3. WHAT IS THE WEIGHTED GINI INDEX OF THE SWIMS SPLIT?4. WHAT IS THE GINI INDEX OF THE FILES =YES NODE?5. WHAT IS THE GINI INDEX OF THE FILES=NO NODE?6. WHAT IS THE WEIGHTED GINI INDEX OF THE
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Consider an iterated prisoner's dilemma with the following stage game. C D C d 3, 3 0, 4 4,0 1, 1 5.5 Determine under what conditions (Limited Punishment; Limited Punishment) is a Sub- game Perfect Nash Equilibrium of this game, while showing your work. A full answer must provide two things. First, the sequence of utility payoffs associated with
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Can someone help me E. Perform a linear regression. [Application 7 marks] Remember: you can use an online calculator to determine all of this information for you! Year, X Attendance, y x2 xy 2001 5.6 2002 5.8 2003 6.3 2004 6.5 200 6.7 2006 6.8 2007 4.9 2008 5.3 2009 6.5 2010 7.0 2011 7.2 2012 7.4 Sum = Sum = Sum = Sum = Sum = Correlation
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I need help answeing these problems Question 6 (3 points) J Saved As the number of degrees of freedom for a t distribution increases, the difference between the t distribution and the standard normal distribution 0 becomes larger @ becomes smaller 0 remains the same 0 cannot be determined from the information given Question 7 (3 points) Suppose
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please solve Suppose that the random variable X represents the amount of electrical energy used (in kwH) in a month for residents in Virginia. The following data (in kwH per month) were recorded from a random sample of 12 residents: 111 113 145 105 90 100 150 88 120 84 230 110 Using the data from the table and assuming that X approximately follows
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The probability distribution of a discrete random variable X is given below. 0 1 2 3 4 5 P(a) 0.35 0.17 0.14 0.13 0.09 0.12 Determine the indicated probabilities. Do not round results. 1. P(X + 1) = 2. P(1
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There is a population of five people.They were each asked how many movies they saw in the last year.Amy saw one (1), Bob saw seven (7), Clara saw thirteen (13), Dora saw nineteen (19), and Earl saw twenty-five (25).We are going to look at every single possible sample of size three (with replacement).Your first column will be a list of every single

Mean, median and mode Histogram 5. Find the mean, median, and mode on the following data: ( Classes Frequency 10 - 14 3 15 - 19 8 20 - 24 19 25 - 29 10 Formula: Mean: x = 0 7 fx cf Median: x - lb; + 2 JX Mode: x = 1b; + i d1 d1 +d2
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could you please see as attach the exercises Exercise 1 Let be the distribution of the weekly wages of the employees of a factory "A" : 53'3\"! {$102} [5. 5i [5. 7t l [7: 8-5l [3-5, 9[ [9. 10l Number 120 190 240 100 50 of employees 1. Determine the statistical population and the character studied. 2. Draw the histogram of the numbers. 4. Determine
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An exercise scientist was testing whether the mean hours exercised per month was different between people who live in urban areas and rural areas. They sample 25 people from urban and 25 people from rural areas and wrote down the amount they exercised each month. They compute a difference of means of 4.2 hours and a 95% conference interval for the

PLease answer thank u. Godblesss 1. The probability distribution is a 1. The curve of a probability distribution is formed by_ A. normal distribution C. normal size B. normal situation D. normal standard A. ball-shaped C. stone-shaped B. bell-shaped D. wall-shaped 2. What is the area under a normal curve? 2. What is the area under a normal curve?
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Determine the appropriate statistical technique with which to answer the researcher's questions. Then, determine if the result is significant using a two-tailed test with ? = .05 (i.e.., report both r/rho/U/T/x 2 /t critical and r/rho/U/T/x 2 /t observed ). Help me with all four steps please: 1) state the null and alternative hypotheses 2)
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Suppose that the demands for a company's product in weeks 1, 2, and 3 are each normally distributed. The means are 50, 45, and 70. The standard deviations are 10, 5, and 15. Assume that these three demands are probabilistically independent. Suppose that the company currently has 180 units in stock, and it will not be receiving any more shipments

/ STAT 235 Final Exam - Winter 2021 Question 26 The breaking strength of rivets produced by a company has a normal distribution with a mean of 10000 psi and a standard deviation of 500 psi. Suppose the Not yet breaking strength of rivets are independent of each other. If 10 rivets are randomly selected, what is the probability that the breaking
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Construct the indicated confidence interval for the population mean using thet-distribution. Assume the population is normally distributed. c=0.90, x=13.6, s=3.0, n=9

Please help. Question 8. Use the 2016 marginal tax rates to campute the tax owed by the follewing person, Asingle man with a taxable income of $42,000 0 Click the icon to View the 2016 marginal tax rates, 0 2016 Marginal Tax Rates - The tax owed is $ , (Type an Integer er a decrmal, Round t0 the nearest cent as needed) 2016 Marginal Tax Rates,
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Fuente: Redaccin: Mtodos de Organizacin y Expresin del Pensamiento, 10ma. Edicin,(Bartolo Garca Molina) Explica la idea central con tus propias palabras. Cuntas oraciones tiene el prrafo? Cul es el tema que trata el prrafo? Guardan todas las oraciones congruencia con el tema? Explica cualquier observacin que tengas en ese sentido. Est la idea

Consider these data on the selling prices ($000) of homes in the city of Warren, Pennsylvania, last year. Selling Price ($000) Frequency $120 up to $150 4 150 up to 180 18 180 up to 210 30 210 up to 240 20 240 up to 270 17 270 up to 300 10 300 up to 330 6 What is the class interval ? How many homes were sold last year? What is the frequency for

Answer these three questions v Question Completion Status QUESTION 1 1 points Saved Which of the following is not a reason to use the binomial distribution to find a probability? The random variable measures the number of successes. There are only two parameters In the question. The probability of success remains constant. The two possible
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Stats A new vaccination is being used in a laboratory experiment to investigate whether it is effective. There are 285 subjects in the study. Is there sufficient evidence to determine if vaccination and disease status are related? Vaccination Status Diseased Not Diseased Total Vaccinated F 141 Not Vaccinated 144 Total 145 140 285 Copy Data Step 3
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Please explain steps A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 2 percentage points with 99% condence if (a) he uses a previous estimate of 34%? (b) he does not use any prior estimates? Click here to view the standard normal
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