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Test the claim that the mean GPA of night students is smaller than 2.8 at the .005 significance level. The null and alternative hypothesis would be: 0.7 Но: и — 2.8 Но: р — 0.7 2.8 H p 0.7 Ho 2.8 Ho: u 2.8 Ho:p H u 2.8 H1 2.8 H1 p 0.7 H1 1 Но:р 3 0.7 H1 p0.7 The test is left-tailed right-tailed two-tailed Based on a sample of 80 people, the sample mean GPA was 2.77 with a standard deviation of 0.08 The test statistic is: -3.35410196625 (to 2 decimals) The critical value is: 1.96 * (to 2 decimals) Based on this we: Reject the null hypothesis OFail to reject the null hypothesis A political candidate has asked you to conduct a poll to determine what percentage of people support him. If the candidate only wants a 10% margin of error at a 90% confidence level, what size of sample is needed? Hint: Video []

Test the claim that the mean GPA of night students is smaller than 2.8 at the .005 significance level. The null and alternative hypothesis would be: 0.7 Но: и — 2.8 Но: р — 0.7 2.8 H p 0.7 Ho 2.8 Ho: u 2.8 Ho:p H u 2.8 H1 2.8 H1 p 0.7 H1 1 Но:р 3 0.7 H1 p0.7 The test is left-tailed right-tailed two-tailed Based on a sample of 80 people, the sample mean GPA was 2.77 with a standard deviation of 0.08 The test statistic is: -3.35410196625 (to 2 decimals) The critical value is: 1.96 * (to 2 decimals) Based on this we: Reject the null hypothesis OFail to reject the null hypothesis A political candidate has asked you to conduct a poll to determine what percentage of people support him. If the candidate only wants a 10% margin of error at a 90% confidence level, what size of sample is needed? Hint: Video []

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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Test the claim that the mean GPA of night students is smaller than 2.8 at the .005 significance level. The null and alternative hypothesis would be: 0.7 Но: и — 2.8 Но: р — 0.7 2.8 H p 0.7 Ho 2.8 Ho: u 2.8 Ho:p H u 2.8 H1 2.8 H1 p 0.7 H1 1 Но:р 3 0.7 H1 p0.7 The test is left-tailed right-tailed two-tailed Based on a sample of 80 people, the sample mean GPA was 2.77 with a standard deviation of 0.08 The test statistic is: -3.35410196625 (to 2 decimals) The critical value is: 1.96 * (to 2 decimals) Based on this we: Reject the null hypothesis OFail to reject the null hypothesis
Transcribed Image Text:Test the claim that the mean GPA of night students is smaller than 2.8 at the .005 significance level. The null and alternative hypothesis would be: 0.7 Но: и — 2.8 Но: р — 0.7 2.8 H p 0.7 Ho 2.8 Ho: u 2.8 Ho:p H u 2.8 H1 2.8 H1 p 0.7 H1 1 Но:р 3 0.7 H1 p0.7 The test is left-tailed right-tailed two-tailed Based on a sample of 80 people, the sample mean GPA was 2.77 with a standard deviation of 0.08 The test statistic is: -3.35410196625 (to 2 decimals) The critical value is: 1.96 * (to 2 decimals) Based on this we: Reject the null hypothesis OFail to reject the null hypothesis
A political candidate has asked you to conduct a poll to determine what percentage of people support him. If the candidate only wants a 10% margin of error at a 90% confidence level, what size of sample is needed? Hint: Video []
Transcribed Image Text:A political candidate has asked you to conduct a poll to determine what percentage of people support him. If the candidate only wants a 10% margin of error at a 90% confidence level, what size of sample is needed? Hint: Video []
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