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 the mean GPA of day students at the .005 significance
level.
The null and alternative hypothesis would be:
Ho:PN = PD Ho:HN = HD Ho:PN = PD Ho: HN = HD Ho: HN = HD Ho:PN = PD
H1:PN > Pp H :UN < HD H:PN # PD H1: HN # Hp H1:HN > D H:PN < PD
The test iş:
left-tailed right-tailed two-tailed
The sample consisted of 25 night students, with a sample mean GPA of 2.48 and a standard deviation of 0.07, and 30
day students, with a sample mean GPA of 2.46 and a standard deviation of 0.05.
The test statistic is:
(to 2 decimals)
The critical value is:
(to 2 decimals)
Based on this we:
OReject the null hypothesis
Fail to reject the null hypothesis
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