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Mathematics Questions and Answers May 11, 2022

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Please help with the following questions C. modality D. a good example of outliers The following 7 questions/computations (Q13 to Q19) are based on a sample summarized in the stemplot below: Stem | Leaf WN 269 1033388 10 Compute: Q13: mean Q14: median Q15: mode Q16: range Q17: interquartile range Q18: variance Q19: standard deviation The following
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You are given a sample of data from the U.S. Census at School , an international classroom project that engages students in grades 4-12 in statistical problem solving. Students complete a brief online survey, analyze their class census results, and compare their class with random samples of students in the United States and other countries. We are

What type of bias is commonly found in systematic reviews? A. Publication B. Selection C. Investigator D. MaturationWhich of the following allows standardization across studies for use in a systematic review? A. P-value B. Cohen's D C. Standard deviation D. Variance squared

Use the figure to answer the question. 3 rays with a common initial point: BD, BC, & BA. The angle formed by BA & BC is labeled 1. The angle formed by BC & BD is labeled 2. 2016 StrongMind. Created using GeoGebra. What is the correct name for the angle formed by adding 1 and 2

Given the equation of a regression line is = 3.5x + 11, what is the best predicted value for y given x = 4? a. 48 b. 7 c. 25 d. 15

Lead a Data Talk and reflect on the Data Talk . What did/didn't go the way you planned? The reflection s h o u l d be one to 2 para graphs. -------------------------------------------------------------------------------------------------------------------------------------- State the group of people in which y o u will lead the Data Talk. They can

Do a two-sample test for equality of means assuming unequal variances. Calculate the p-value using Excel. (a-1) Comparison of GPA for randomly chosen college juniors and seniors: T1 = 4.25, $1 = .20, n1 = 15, 2 = 4.6, $2 = .30, n2 = 15, a = .025, left-tailed test. (Negative values should be indicated by a minus sign. Round down your d.f. answer to
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Question 4 [13 marks} Te study the effect the ecelegical impact efmalaria, researchers in Califernia measured the effect ef malaria en what distance an animal ceuld run in 2 minutes. "they used a sample ef a lecal lizard species, Scelcpcri's cccldenralis, cellected in the field. "they selected 15 lizards em these fcund te he infected with the
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What values can the correlation coefficient take on? What is our interpretation of these values?

INDEX NUMBERS PROBLEM: Belowarethepricesfortoothpaste(9oz),shampoo(7oz),coughdrops(100pack),andantiperspirant (2oz)forAugust2000andAugust2009.Inaddition,thequantitiespurchasedareincluded.UseAugust2000asabase. August of 2000 August of 2009 Article Price Amount Price Amount Toothpaste $2.49 $3.35 Shampoo 3.29 4.49 Pill for the cough 1.59 W N A 4.19
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This week you're learning about classification trees. Classification trees and a range of other predictive models can be used by organisations to make decisions about their customers/patients/students/citizens etc. Next week we will be talking about ethical considerations for professionals working with data. This discussion aims to get you

Let P ( A B ) = 0.3, and P ( A B c ) = 0.15. Compute

for your homework. (a) [1 point] Run a regression of per capita income (PerCapitaInc) on percent employment in the FIRE sector (PetEmpFIRE). What is the estimated slope? Explain what this number means in words in terms of per capita income and also indicate if the relationship is statistically significant at the 10%, 5%, and 1% levels. (b) [1
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Predictive analytics consists of techniques that use mathematical models constructed from past data to predict future events or __________

Please help me solve the following... The odds on(against) your bet are 6 to 7 . If you bet $ 14 andwin, how much will yougain?

A doctoris researching the effects of "too much text messaging" on a group of teenagers. He has already shown that the average number of text messages sent per day by teenagers is 312 with a standard deviation of 125. He wants to know howmany text messages separate the the lowest 15% from the highest 85% in a sampling distribution of 144

Which one is not part of the head? los ojos la nariz el pecho la boca

A standard deck of cards contains 52 cards. One card is selected from the deck. (a) Compute the probability of randomly selecting a diamond or heart (b) Compute the probability of randomly selecting a diamond or heart or club (c) Compute the probability of randomly selecting a two or heart a. P( diamond or heart ) = (Round to three decimal places

The question is stated below. All information is provided and none is missing. Min ((R1 - R)' + (R2 - R) + ( R3 - R)2 + ( R4 - R) + ( Rs - R)?) (8.10) s.t. R1 = 10.06FS +17.641B +32.41LG +32.36LV +33.44SG +24.56SV (8.11) R2 = 13.12FS +3.25/B +18.71LG +20.61LV +19.40SG +25.32SV (8.12) R3 = 13.47FS +7.51/B +33.28LG +12.93LV +3.85SG -6.70SV (8.13) RA
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A survey of850U.S. adults found that31%of people said that they would get no work done on Cyber Monday since they would spend all day shopping online. Find the99% confidence interval of the true proportion. Round intermediate answers to at least five decimal places. Round your final answers to at least three decimal places. question: ___

Project: Hypothesis Tests Due: Tuesday, June 18th by 11:59PM Introduction The goal of this project is to analyze per capita income and the drug overdose mortality rate for each of the fifty states, for a given year, and over time. The report should be organized, formatted well, and typed (in a program like Microsoft Word). All work MUST be your

Leon knows that his first four test grades were 78 86 82 and 88 Use the formula x =x 1 +x 2 +...+x n n x = x 1 + x 2 + ... + x n n to find Leon's grade on the fifth test if his test average is 83.8 83.8 . .

When faced with a problem or choice, humans can use two different strategies: "cognitive reflectivity," which results in slower responses and few mistakes, or "cognitive impulsivity," which results in quicker responses but also more mistakes. Depending on the individual, these two strategies are used differently. A pilot experiment was conducted

Which of the following statements about distributing obscenity via the Internet is FALSE? a. Prosecutions for adult porn sites are extremely rare. b. In 2015 Playboy announced it would no longer feature nudity in its magazines because it could not compete with the Internet. c. People are directed to porn sites through "porn-napping" and

Un mdulo de produccin en confeccin textil de camisas procesa seis tipos de pedidos para sus clientes, el modulo consiste en cinco operaciones secuenciales que deben realizarse para cada pedido. Los datos del procesado se muestran en la tabla. Se desea terminar todos los pedidos tan pronto como sea posible. (5 puntos)

MATH - STATISTICS: Problem 2 A researcher wishes to test the claim that the average cost of tuition and fees at a 4-year college at least $7000.She selects a random sample of 81 colleges and finds the mean to be $6900.The standard deviation is $500. a. Is there evidence to support the claim at = .06 ? b. Suppose no claim was made but the

9) during a series of coordination test given to third grade children each child is asked to run through an obstacle course as fast as possible. Past experience shows that the time X required for a typical third grader is normally distributed with a mean of 36 seconds in a standard deviation of six seconds a) what is the probability that a child

The shaded region under a Normal distribution with mean 0 and standard deviation 1 (Standard Normal distribution) is shown. Which of the following is the best choice that corresponds to the shaded region? Select one. \f\f
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A consulting firm submitted a bid for a new research project. The company overseeing the bids regularly requests additional information to help with their assessment and final decision. Historically, 65% of all bids require additional information to be submitted. Past experience also shows that for 85% of the bids which required additional

Check Concerns about climate change and CO2 reduction have Initiated the commercial production of blends of blodiesel (e.g., from renewable sources) and petrodiesel (from fossil fuel). Random samples of 44 blended fuels are tested in a lab to ascertain the blo/total carbon ratio. (a) If the true mean is .9590 with a standard deviation of 0.0080,
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Create control parts in minitab using the statistical software to analyze the following data. \f
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Please I need the answer ASP Score on last try: 0 of 10 pts. See Details for more. > Next question You can retry this question below Run a regression analysis on the following bivariate set of data with y as the response variable. X y 67.8 59.8 69.5 46.4 57.9 35.7 60.3 62.9 54.8 42.5 21 -21.3 28.5 -7.3 63.5 39.2 53.6 30 47.5 30.5 74.8 72 55 31.2
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The top triangular part (10x10x8)of the kite sail will be purple. The remaining sections of the kite sail will be orange. The cost of the material used for the purple part of the sail is $2/ft. The cost of the material used for the orange part of the sail is $3/ft. What is the cost of the purple section of the sail

QUESTION 3 Assume a doctor uses a specific form of mesh to repair all hernias in his hernia patients. The makers of the mesh found there was an error that occurred while making the mesh, and the hernia mesh has a 45% chance of failure. The doctor has treated 7 patients with the mesh so far; thus, the probability that the mesh does not fail in all

Step 1: Write Section 1 of the DAA:The Data Analysis Plan Name the variables used in this analysis and whether they are categorical or continuous. State a research question, null hypothesis, and alternate hypothesis for the independent samples t-test. Step 2: Write Section 2 of the DAA:Testing Assumptions Test for one of the assumptions of t tests
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Statistics Multiple Regression A study was performed aimed at trying to further understand what factors contribute to the home size of a family in the United States. Sample data was collected from a small sample to assist with the initial analysis & discussion. Data: Definition of variables Home size (Y) = home square footage in hundreds of square

A 14m long ladder is leaning against a wall. The top of the ladder is sliding down the wall at a constant speed of 5m/s. How quickly is the bottom of the ladder moving away from the wall when the top of the ladder is 6m from the ground? Give your answer as an exact expression. please breakdown each step

Give the equation of the horizontal asymptote, if any, of the function: g(x)=(x^2+3x-4)/(x-4)

Where will we travel this winter break? Group of answer choices Closed question Open-ended question

Step by step solution please {1} Estimating the Most Liker Location of Oxygen-Cathode Failure: The below table contains the failure-frequency map of identical oxygen cathodes in an Electl'ochemistrj,r experiment. These mutually independent failures are stipulated to have occurred in three independently operating electrochemical plants. Then answer
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Last year, Manuel deposited$7000 into an account that paid11%interestper year and $1000 into an account that paid5%interest per year. No withdrawals were made from the accounts, NO rounding. (a) What was the totalinterestearned at the end of1 year? $________ (b) What was thepercentinterest for the total deposited?________%

There is a 0.7 probability that students will correctly follow all instructions on the Comprehensive Competency Test.What is the probability that exactly 7 of 10 students in a class section correctly follow all assessment instructions? Show work separately.

Research has found that watching others pursue their goals can influence one's own motivation. Goal contagion occurs when people observe someone else working towards a goal and then adopt and pursue that goal themselves ( Aarts, Gollwitzer, & Hassin, 2004). For example, participants who watched a video of one character helping another were more

In You must generate all random values using a mean of 100 and standard deviation of 25. You must replicate calculating the sample average 5000 times when calculating the standard error on the mean for a given sample size. You must visualize the SEM with respect to the sample size on a plot similar to the one created in the lecture example. The
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A job placement agency advertised that last year its clients, on average, had a starting salary of$39,500. Assuming that average refers to themean, which of the following claims must be true based on this information? Note: More than one statement could be true. If none of the statements is true, mark the appropriate bo x. Last year all of their

Error Degrees of Freedom are calculated as n - p - 1 for multiple regression models. The p represents the number of coefficients (not including the intercept) in the estimated model. Report the Error Degrees of Freedom for this example: Assume 192 observations are used to estimate a first-order model with 3 different numerical explanatory

6.104 Automated drilling machine. Refer to the Journal of Engi- neering for Industry (Aug. 1993) study of an automated drilling machine, Exercise 3.67 (p. 120). The eight ma- chining conditions used in the study are reproduced here. Workpiece Dril Size Drill Speed Feed Rate Experiment Material (in.) (rpmm) (ipr) 1 Cast iron 25 1,250 011 2 Cast
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Which of the following is the value of x in the equation below | 8x-4|-10=2 A. x= -1/2 or x=3/2 B. x= -1 or x=2 C. x =-2 or x= 1 D. x= -3/2 or x= 1/2

consider the following data set: 24, 41, 27, 49, 26, 32, 27, 40, 43, 50, 47, 49, 27, 33, 34. Build a frequency distribution for this data. Use five classes, Each call has width 6. The class limits for the first class are LCL = 22, UCL = 27. What are the class boundaries for the fouth class. what is the answer: LCB=39.5 and UCB=45.5 or LCB=39.75 or

Nse pr t njjtn tematik, rezultatet nga nj studim sasior jan n kontradikt me rezultatet nga nj studim cilsor ... A) Do t merren pr baz rezultatet e studimit sasior B) Do t merren pr baz rezultatet e studimit cilsor C) Do t dizenjohet nj studim i ri me metodologji mikse D) Do t dizenjohet nj studim i ri sasior

23. What is the effect of better maternal care on gestation time and preemies? The goal is to obtain pregnancies 240 days (8 months) or longer. Suppose the distribution of gestation time for pregnancy mothers with vitamins only follows normal distribution with mean of 250 days and standard deviation of 20 days . And the distribution of gestation

can you assist with a couple math question. i need help asap

Find the area inside r = 4 cos() but outside the curve r = 1.

User profile photo In the spam-ham example, what does a recall rate of 55.2% mean? Select an answer: a. 55.2% of spam properly went to the spam folder while the rest went to the inbox. b. 55.2% of all emails were identified as spam. c. Any email, whether it was spam or not, was correctly identified 55.2% of the time

use the value of the linear correlation coefficient to calculate the coefficient of termination Calculate the coefficient of determination Use the value of the linear correlation coefcient to calculate the coefcient of determination. What does this tell you about the explained variation of the data about the regression line? About the unexplained
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A population average (u) is 85. If you repeatedly collect samples of size n = 44 from this population, what would you expect to be the average of the means collected? a. 44 b. 43 c. 85 d. 88

Problem 2. Simulate a coin toss. Let X = 1 indicate heads and X = 0 indicate tails. The probability of heads is .7. One trial of an experiment consists of n = 10 tosses. For each trial, ni =1 X i is the total number of heads in 10 tosses. Run the experiment with 1,000 trials and ni =1 X i, plot a histogram for nX i . (A DataTable may make sense

Exhibit: Department Store. A random sample of 64 credit sales in a department store showed an average sale of $75.00. From past data, it is known that the standard deviation of the population of sales is $24.00. (For this exhibit, avoid rounding for the intermediate steps and round your final solutions to 4 decimal places) 1. Refer to the Exhibit

How many tissues should the Kimberly Clark Corporation package of Kleenex contain? Researchers determined that 60 tissues is the mean number of tissues used during a cold. Suppose a random sample of 100 Kleenex users yielded the following data on the number of tissues used during a cold: X= 52, S= 22. Suppose the test statistic does fall in the

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I could use some help explaining the following: If a confidence interval for the mean is (2,7), what is the sample mean used to construct this confidence interval?

The student council is hosting a drawing to raise money for scholarships. They are selling tickets for $10 each and will sell 500 tickets. There is one $1,000 grand prize, five $100 second prizes, and ten $20 third prizes. You just bought a ticket. Find the expected value for your profit

Conjugate the stem-changing verb cerrar (ie). Remember that -er verbs end in: o, as, a, amos, an. yo _________________________ t ______________________ l / ella / usted ______________ nosotros(as) ______________________ ellos / ellas / ustedes _______________________

1) Use the data sets below 2) Summarize and display the selected variables using statistical measures 3)Give a written description of interesting features of the data. https://www.depauw.edu/learn/stata/Workshop/Munnell.pdf The data was collected as part of the Home Mortgage Disclosure Act, a law designed to monitor minority access to the mortgage

Question: Assignments [08] Assignment 8 [08] Assignment 8 . 1. In the following situations, indicate whether you'd use the normal distribution, the t distribution, or neither. a. The population is normally distributed, and you know the population standard deviation. b. You don't know the population standard deviation, and the sample size is 35. c.

onsider the probability that at least 99 out of 146 people will not get the flu this winter. Assume the probability that a given person will not get the flu this winter is 58% . Approximate the probability using the normal distribution. Round your answer to four decimal places

Two dice are rolled. What is the probability that the sum of the two dice on the next roll is at least 9? 4. Two dice are rolled. What is the probability that the sum of the two dice on the next roll is at least 9
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Match the following movement terms to the correct description: Group of answer choices Decreasing the angle of a joint in the sagittal plane [ Choose ] Increasing the angle of a joint in the sagittal plane [ Choose ] Moving a limb away from the midline of the body. [ Choose ] Moving a limb towards the midline of the body

Thirty-six percent of all Americans drink bottled water more than once a week (Natural resources Defense Council, December 4, 2015). Suppose you have been hired by the Natural Resources Defence Council to investigate bottled water consumption in St. Paul. You plan to select a sample of St. Paulites to estimate the proportion who drink bottled

Consider the following equation of an ellipse. 49x2 + 25y2 - 294x + 200y - 384 = 0 Step 1 of 4: Rewrite this equation in the standard form of an ellipse
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Question 4 Describe a function g(x) in terms of f(x) if the graph of g is obtained by vertically stretching f by a factor of 7, then shifting the graph of f to the right 7 units and upward 5 units. g(z) = Af(x + B) + C where A = B > Next Question O WEST SIDE MT es C OI @ & 2 3 A 5 tab q W e y
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Math Questions - Topics: Probability Distributions, Binomial Probability Distributions & Normal Probability Distributions Question 1: Refer to Question 1 - Probability Distribution.png Question 1 (4 points) *ALL ANSWERS FOR THIS QUESTION MUST BE ANSWERED BASED ON THE "BY HAND/TABLE" CALCULATION METHOD*** *ANSWERS FOUND BY EXCEL FUNCTION WILL BE
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bank manger has developed a new system to reduce the time customers spend waiting to be served by tellers during peak business hours .they want to lower the waiting time less than six min.in this case we want to investigate whether the sample of 100 waiting times provide evidence to support the claim that M is less than 6 min.A Moree detailed

In urban areas, motor carriers are the best mode of transportation to use? Group of answer choices True False

25 4 pts The Australian sheep dog is a breed renowned for its intelligence and work ethic. It is estimated that 35% of adult Australian sheep dogs weigh 65 pounds or more. A sample of 15 adult dogs is studied. What is the probability that exactly 5 of them weigh 65 lb or more? O 0.0096 O 0.7877 0.2123 O 0.9904 MacBook Air

The variable of interest in a study. In ABA it is often a measure of the subject's behavior. Select one answer a) extraneous variable b) dependent variable c) confounding variable d) variable baseline

Monitoring amount of trash: I took two 10-gallon trash bags full of trash to my apartment's trash bin this week. Typically, I will take the trash daily, using more bags, which are less full. I don't like carrying full bags of trash with me, but I do like that I am saving money on buying trash bags so frequently. I will say, looking at the total

Famous basketball players score lots of points. As sports, players, technology evolve the threshold of how many points a player scores to be considered great changes. In the 1960's, Wilt Chamberlain was known for scoring an average of 30.1 points per game (ppg). In the 1990's, Michael Jordan was known for scoring an average of 30.1 ppg. In the

CASE STUDY 1: Color considerations with a dark background. Which of the figures, 9.1, 9.2, 9.3 makes it easiest for you to focus on the data? In 3-4 sentences explain why that figure is the best use of a dark background, and why the other ones are not as impactful. Which one of your data visualizations from YOUR BIG IDEA could use this type of

Which statement about data exploration is true? a. Examining data carefully before analysis helps prepare it for hypothesis testing. b. One purpose of data exploration is to make sure each data element is separated into its own file. c. Data exploration should be performed after launching a formal analysis. d. If the sample is drawn from a normal

Let X1, X2, X3 be a random sample from the N(1, 2) distribution. Let X4, X5 be a random sample from the N(0, 9) distribution, and independent of X1, X2, X3. Find the value of the constant c so that has an F-distribution. (see the attached picture for complete question) Problem B . 3 ( a ) Give the definition of an F- random variable ( b ) Let X 1
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1.Explain whether each of the following is an example of a macroeconomic concern or a microeconomic concern. a.Ford Motor Company is contemplating increasing the production of full-size SUVs based on projected future consumer demand. b.Congress is debating the option of implementing a valueadded tax as a means to cut the federal deficit. c.The

Theoretically and contextually based data are often more interpretable than blind empiricism. This information leads to three further questions: a. Were the objectives meaningful? b. What are the costs associated with the data? c. What is the history of such measures for the obtainment of goals? d. What are other agencies getting in the lines of

Pepsi Corps beverage can manufacturing plant in Appleton, Wisconsin, uses a metal supplier that provides a metal with a known thickness standard deviation o= .000780 mm. Assume a random sample of 49 sheets of metal resulted in an x=. 1503 mm. Calculate the 99 percent confidence interval for the true mean metal thickness. Round answer 4 decimal

A company wants to determine a confidence interval for the average CPU time of its teleprocessing transactions. A sample of 70 random transactions in milliseconds is given below. Assume that the transaction times follow a normal distribution with a standard deviation of 600 milliseconds. Use Excel to determine a 98 % confidence interval for the

Find the necessary confidence interval for the binomial proportion p . (Round your answers to three decimal places.) A 90% confidence interval for p , based on a random sample of n =500observations from a binomial population with x =479 successes. _______ to_______ ?

Determine the point estimate of the population mean and margin of error for the confidence interval. Lower bound is 20, upper bound is 30 The point estimate of the population mean is ? explain please

Silverband resistors are correct to +-10%.If the probability that such a resistor of nominal value of 100 ohms in the acceptable range of 100+-2 ohms is 0.6 what is the probability that of three purchased: 1. The first two are within this range 2. The first two are within this range and the third outside it 3. Any two are within the range

A research study is being performed to look at the association between vaping and mouth cancer. When the researchers are looking at potential confounders, they should look to see if there is a difference of more than _____ between the crude and adjusted odds ratios

Given the data set shown below. Keep 4 decimal places. ID attr A attr B attr C class label 1 F F T - 2 T F T + 3 F T F - 4 T F F - 5 T F T + 6 F F T + 7 T T F - 8 F F F - 9 F T F + 10 T T T + a) we need to estimate the conditional probabilities for P(A = T |+), P(B = T |+),P(C = T |+),P(A = T |-),P(B = T |-),P(C = T |-). please post the detailed

Can someone help me with this one? 6.17. Muscle shortening. In 1938 Av Hill proposed a mathematical model for the rate of shortening of a muscle, v, (in cm/sec) when it is work- ing against a load p (in gms). His so called force-velocity curve is given by the relationship (pta)v= b(po -p) where a, b, po are positive constants. (a) Sketch the
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The winning team's score in 7 high school basketball games was recorded.If the sample mean is 68.3 points and the sample standard deviation is 13.0 points, find the 98% confidence interval of the true mean if the distribution of points is normal. Select one: a.63.4 73.2 b.52.9 83.7 c.56.9 79.7 d.37.4 99.2 e.Cannot be determined

A random sample of size9 from a normal distribution has standard deviation= s 45 .Test= : H 0 63 versus < : H 1 63 .Use the= 0.05 level of significance.

Among 10 cupcakes: 2 of them with chocolate, 1 with caramel, 1 with lemon, and 3 of them with strawberry cream. I want to select 3 cupcakes, one at a time without replacement. What is the probability of having a chocolate cream cupcake among these three? ppois?dbinom?pbinom?dhyper

In the research entitled: "Technological Competence as Caring and Clinical Decision-Making Skills among ICU Staff Nurses", a descriptive-correlational study. What will be the appropriate statistical instrument to be used in the study ? Question 41 Answer a. Pearson R b. Mean c. ANOVA d. T -Test

Hello can you please help me solve this problem please Television viewing reached a new high when the Nielsen Company reported a mean daily viewing time of 8.35 hours per household.+ Use a normal probability distribution with a standard deviation of 2.5 hours to answer the following questions about daily television viewing per household. {a} What
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Answer the following question about vectors: If a = (i) , write down the vector: a in the same direction as a and twice its length I: in the opposite direction to a and half its length. Find a vector v which has: 2 a the same direction as (_1 ) and length 3 units 1 b the opposite direction to (_4 ) and length 2 units. Prove that P(2, 1, 1), 0(5,
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Homework: 5.2 Integrating Growth and Decay Models Score: 0 of 1 pt 5 of 6 (1 complete) A 5.2.11 Find the accumulated future value of the continuous income stream at rate R(t), for the given time T, and interest rate k, compounded continuously. R(1) = $400,000, T = 24 years, k = 6% The accumulated future value is $]. (Round to the nearest ten
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If you are comparing two samples (each sample has 20 observations), which test will give you the most conservative outcome? A.the Z test B.the pooled variance t-test C.the t-test with separate variances D.all of the tests should give you the same outcome since the sample does not change

Isabel conducted a study to evaluate if there was an effect of baby formula on total fat in 1 year old babies. In this study, she had two groups, one group were babies fed with baby formula only, the other group were breast fed babies. Which option corresponds to the best model or the best models to analyze the data? 1) Classical Regression Model

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