MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Transcribed Image Text:Test the claim that the mean GPA of night students is larger than 2.2 at the .10 significance level.
The null and alternative hypothesis would be:
Họ:p = 0.55 Họ : µ = 2.2 Ho: µ = 2.2 Ho:µ = 2.2 Ho:p = 0.55 Ho:p = 0.55
H1:p 0.55 H1:µ + 2.2 H1:µ > 2.2 H1: µ <
2.2 Но: р — 0.55 Но:р
2.2 H1:p > 0.55 H1:p < 0.55
%3D
The test is:
left-tailed two-tailed right-tailed
Based on a sample of 75 people, the sample mean GPA was 2.23 with a standard deviation of 0.07
The test statistic is:
(to 2 decimals)
The critical value is:
(to 2 decimals)
Based on this we:
OFail to reject the null hypothesis
Reject the nul hypothesis
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