A edugen.wileyplus.comB My Blackboard.. India - total p.O Toosii - Met In.Interconnected.E The relationshi.E essay 2 - Goog..hread: "Dedu.WileyPLUS: MyWileyPLUS | |ELEMENTS OF SLock, Statistics: Unlocking the Power of Data, 2eORIONDownloadable eTextbookceAssignmentGradebooknentFULL SCREENPRINTER VERSICZ Your answer is partially correct. Try again.Is a t-Distribution Appropriate?A sample with size n = 12 has I= 7.6 and s = 1.6. The dotplot for this sample is given below.6.781011Indicate whether or not it is appropriate to use the t-distribution.Yes :D.If it is appropriate, give the degrees of freedom for the t-distribution and give the estimated standard error. If it is not appropriate, 'enter -1 in both of the answer fields below.-D.Enter the exact answer for the degrees of freedom and round your answer for the standard error to two decimal places.-D.df =standard error =Click if you would like to Show Work for this question: Open Show Worken 1-on 1-I Privacy PolicY I 2000-2020 John Wiley & Sons. Inc. All Rights Reserved. A Division of lohn Wiley & Sons. Inc.VersMacBook ProTheI'm#2$&34678.6.ERT.YU.O.P.S.DJ.KN.MB. ce AssignmentсеGradebookORIONDownloadable eTextbooknentFULL SCREENPRINTER VERSION(BACKChapter 6, Section 2-CI, Exercise 109What Influences the Sample Size Needed?In this exercise, we examine the effect of the margin of error on determining the sample size needed.Find the sample size needed to give, with 99% confidence, a margin of error within +6. Within +4. Within ±1. Assume that we use o = 25 as our estimate of the standard deviation In each case.Round your answers up to the nearest integer.ME = 6n =ME = 4:n =ME = 1: n=Click If you would like to Show Work for this question: Open Show WorkBy accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor.Question Attempts: 0 of 15 usedSUBMIT ANSWERSAVE FOR LATEREarn Maximum Points available only if youanswer this question correctly in your firstattempt.%70nent 1 Privacy Policy .2000-2020 John Wiley 8 Sons, Inc. All Rights Reserved. A Division of John Wiley & Sons, Inc.Version 4.24.20.1MacBook ProI'm&#2$3468.6.%3DdeleteQE WRYU-O.JKCVMMOSISOcommandoptionioncommand

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Your answer is partially correct. Try again. Is a t-Distribution Appropriate? A sample with size n = 12 has I= 7.6 and s = 1.6. The dotplot for this sample is given below. 7 10 11 Indicate whether or not it is appropriate to use the f-distribution. Yes: If it is appropriate, give the degrees of freedom for the t-distribution and give the estimated standard error. If it is not appropriate, enter -1 in both of th answer fields below. Enter the exact answer for the degrees of freedom and round your answer for the standard error to two decimal places. df = standard error = Click if you would like to Show Work for this question: Open Show Work 00o- o LO

Your answer is partially correct. Try again. Is a t-Distribution Appropriate? A sample with size n = 12 has I= 7.6 and s = 1.6. The dotplot for this sample is given below. 7 10 11 Indicate whether or not it is appropriate to use the f-distribution. Yes: If it is appropriate, give the degrees of freedom for the t-distribution and give the estimated standard error. If it is not appropriate, enter -1 in both of th answer fields below. Enter the exact answer for the degrees of freedom and round your answer for the standard error to two decimal places. df = standard error = Click if you would like to Show Work for this question: Open Show Work 00o- o LO

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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+ ill 2 Scores on the Scholastic Aptitude Test are normally distributed with µ = 500 and o= 100. Suppose we randomly select 20 persons from the population of all persons who take the test and compute the sample mean, A. What is the standard deviation of the sampling distribution of B. What will be the shape of the sampling distribution of ? ? e. What is the probability that the sample mean, will be greater than 560?
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Claim: p2 0.26; a = 0.08. Sample statistics: p = 0.20, n = 170 O E. A normal sampling distribution cannot be used. If a normal sampling distribution can be used, identify standardized test statistic z. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. Z= (Round to two decimal places as needed.) O B. A normal sampling distribution cannot be used.
n a trial for the university athletics competition, one aims to estimate the mean chest size of the male athletes. A random sample of 70 male athletes gave rise to an average chest size of 42 inches with a standard deviation of 16 inches. What would be the distribution of the statistic that we need to estimate the mean chest size? a. It is a normal distribution with mean 42 inches and standard deviation 16 inches. b. it is a student's t distribution with degree of freedom 69. c. It is a student's t distribution with mean 42 inches and standard deviation 16 inches. d. it is a normal distribution with degree of freedom 69. 2.What is the standard error of the sample mean in problem 1? a. 1.91 b. 0.23 c. 17.5 d. 16 3. What would be the margin of error for a 95% confidence interval of the true chest size in problem 1? a. 0.46 b. 0.52 c. 3.82 d. 4.38
The distribution of average hours worked per week for random samples of 1000 workers in the U.S. has a mean of 40 and a standard error of 0.04 The distribution in this scenario is a: sampling distribution sample distribution population distribution
10) A county is considering raising the speed limit on a road because they claim that the mean speed of vehicles is greater than 40 mi/hr. A random sample of 15 vehicles has a mean speed of 43 mil/hr and a standard deviation of 4.4 mi/hr. Assume that speeds follow a normal distribution. What statistical test should be used to test the claim? (pick one of the options) 1. t-test 2. 2.73 3. 15 4. 10.9 5. 14 6. z-test 7. 2.52 8. 2.64 Calculate the value of standardized test statistic. (pick one of the options) 1. t-test 2. 2.73 3. 15 4. 10.9 5. 14 6. z-test 7. 2.52 8. 2.64 What is the degree of the freedom for the distribution of the test statistics. (pick one of the options) 1. t-test 2. 2.73 3. 15 4. 10.9 5. 14 6. z-test 7. 2.52 8. 2.64
The prices of a sample of books at University A were obtained by two statistics students. Then the cost of books for the same subjects (at the same level) were obtained for University B. Assume that the distribution of differences is Normal enough to proceed, and assume that the sampling was random. 1. Find the test statistic for this test. t = ___ (Round to two decimal places as needed.) 2. Find the p-value for this test. p-value = ____ (Round to three decimal places as needed.) 3. What is the conclusion for this test?
Decide whether the normal sampling distribution can be used. If it can be used, test the claim about the difference between two population proportions p1 and p2 at the given level of significance α using the given sample statistics. Assume the sample statistics are from independent random samples. Claim: p1=p2, α=0.10 Sample statistics: x1=142, n1=156 and x2=144, n2=188 Find the standardized test statistic. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
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Decide whether the normal sampling distribution can be used. If it can be used, test the claim about the difference between two population proportions p, and p2 at the given level of significance a using the given sample statistics. Assume the sample statistics are from independent random samples. Claim: P1 = P2, a = 0.10 Sample statistics: X1 = 108, n, = 128 and x, = 32, n, = 195 %3D Can a normal sampling distribution be used? No Yes Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: P1 = P2 Ha: P1 > P2 В. Но: Р1 <Р2 Ha: P1 = P2 O C. Ho: P1 # P2 Ha: P1 = P2 D. Ho: P1 = P2 Ha: P1 # P2 O E. A normal sampling distribution cannot be used, so the claim cannot be tested.