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Is the variance for the amount of money, in dollars, that shoppers spend on Saturdays at the mall the same as the variance for the amount of money that shoppers spend on Sundays at the mall? Suppose that the tables below show the results of a study: Saturday: 75.5 87 86.9 61.8 80.2 60.7 65.2 90.6 89.1 67.4 47.5 74.8 87.4 60.6 90.2 64.7 (Note: The average and the standard deviation of the data are respectively 74.35 dollars and 13.504 dollars.) Sunday: 123.4 82 75.7 111.6 90.6 85.9 92.9 106.2 89 68.2 112.5 60.6 111.9 98.2 (Note: The average and the standard deviation of the data are respectively 93.48 dollars and 18.32 dollars.) Use a 5% significance level to test the claim that the standard deviation for the amount of money that shoppers spend on Saturday is different from the standard deviation for the amount of money that shoppers spend on Sunday. If normality plots are not provided assume that the samples are from normal populations. Procedure: Select an answer Assumptions: (select everything that applies) Population standard deviation are unknown Sample sizes are both greater than 30 Population standard deviation are unknown but assumed equal Simple random samples Independent samples Population standard deviations are known Paired samples The number of positive and negative responses are both greater than 10 for both samples Normal populations

Is the variance for the amount of money, in dollars, that shoppers spend on Saturdays at the mall the same as the variance for the amount of money that shoppers spend on Sundays at the mall? Suppose that the tables below show the results of a study: Saturday: 75.5 87 86.9 61.8 80.2 60.7 65.2 90.6 89.1 67.4 47.5 74.8 87.4 60.6 90.2 64.7 (Note: The average and the standard deviation of the data are respectively 74.35 dollars and 13.504 dollars.) Sunday: 123.4 82 75.7 111.6 90.6 85.9 92.9 106.2 89 68.2 112.5 60.6 111.9 98.2 (Note: The average and the standard deviation of the data are respectively 93.48 dollars and 18.32 dollars.) Use a 5% significance level to test the claim that the standard deviation for the amount of money that shoppers spend on Saturday is different from the standard deviation for the amount of money that shoppers spend on Sunday. If normality plots are not provided assume that the samples are from normal populations. Procedure: Select an answer Assumptions: (select everything that applies) Population standard deviation are unknown Sample sizes are both greater than 30 Population standard deviation are unknown but assumed equal Simple random samples Independent samples Population standard deviations are known Paired samples The number of positive and negative responses are both greater than 10 for both samples Normal populations

MATLAB: An Introduction with Applications
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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Procedure: Select an answer Select an answer Assumption Two variances F Hypothesis Test Two means Z Hypothesis Test Popu Two proportions Z Hypothesis Test Samp Two means T (non-pooled) Hypothesis Test Two paired means T Hypothesis Test Popu Two means T (pooled) Hypothesis Test Simple random samples Independent samples Population standard deviations are known ssumed equal Paired samples The number of positive and negative responses are both greater than 10 for both samples Normal populations
Transcribed Image Text:Procedure: Select an answer Select an answer Assumption Two variances F Hypothesis Test Two means Z Hypothesis Test Popu Two proportions Z Hypothesis Test Samp Two means T (non-pooled) Hypothesis Test Two paired means T Hypothesis Test Popu Two means T (pooled) Hypothesis Test Simple random samples Independent samples Population standard deviations are known ssumed equal Paired samples The number of positive and negative responses are both greater than 10 for both samples Normal populations
Is the variance for the amount of money, in dollars, that shoppers spend on Saturdays at the mall the same as the variance for the amount of money that shoppers spend on Sundays at the mall? Suppose that the tables below show the results of a study: Saturday: 75.5 87 86.9 61.8 80.2 60.7 65.2 90.6 89.1 67.4 47.5 74.8 87.4 60.6 90.2 64.7 (Note: The average and the standard deviation of the data are respectively 74.35 dollars and 13.504 dollars.) Sunday: 123.4 82 75.7 111.6 90.6 85.9 92.9 106.2 60.6 111.9 98.2 89 68.2 112.5 (Note: The average and the standard deviation of the data are respectively 93.48 dollars and 18.32 dollars.) Use a 5% significance level to test the claim that the standard deviation for the amount of money that shoppers spend on Saturday is different from the standard deviation for the amount of money that shoppers spend on Sunday. If normality plots are not provided assume that the samples are from normal populations. Procedure: Select an answer Assumptions: (select everything that applies) Population standard deviation are unknown Sample sizes are both greater than 30 Population standard deviation are unknown but assumed equal Simple random samples Independent samples Population standard deviations are known Paired samples The number of positive and negative responses are both greater than 10 for both samples Normal populations
Transcribed Image Text:Is the variance for the amount of money, in dollars, that shoppers spend on Saturdays at the mall the same as the variance for the amount of money that shoppers spend on Sundays at the mall? Suppose that the tables below show the results of a study: Saturday: 75.5 87 86.9 61.8 80.2 60.7 65.2 90.6 89.1 67.4 47.5 74.8 87.4 60.6 90.2 64.7 (Note: The average and the standard deviation of the data are respectively 74.35 dollars and 13.504 dollars.) Sunday: 123.4 82 75.7 111.6 90.6 85.9 92.9 106.2 60.6 111.9 98.2 89 68.2 112.5 (Note: The average and the standard deviation of the data are respectively 93.48 dollars and 18.32 dollars.) Use a 5% significance level to test the claim that the standard deviation for the amount of money that shoppers spend on Saturday is different from the standard deviation for the amount of money that shoppers spend on Sunday. If normality plots are not provided assume that the samples are from normal populations. Procedure: Select an answer Assumptions: (select everything that applies) Population standard deviation are unknown Sample sizes are both greater than 30 Population standard deviation are unknown but assumed equal Simple random samples Independent samples Population standard deviations are known Paired samples The number of positive and negative responses are both greater than 10 for both samples Normal populations
Expert Solution
Step 1

Given data:

Saturday Sunday
75.5 123.4
80.2 111.6
60.7 90.6
65.2 85.9
90.6 92.9
87 82
89.1 106.2
67.4 89
47.5 68.2
74.8 112.5
86.9 75.7
87.4 60.6
60.6 111.9
90.2 98.2
64.7  
61.8  

 

 

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