is larger than the mean GPA of day students a up Ho:PN < PD Ho:PN = PD Ho:N up H1:PN > PD H1:PN + PD H1:µN

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 9PPS
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Test the daim 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 2 PD Ho:HN < Hp Ho:µN = µp Ho:PN < Pp Ho:PN = Pp Ho:µN 2 HD
H1:PN < PD H:HN > Hp H1:µn + µp H1:PN > Pp H1:PN # Pp H1:µN < PD
The test is:
right-tailed two-tailed left-tailed
The sample consisted of 30 night students, with a sample mean GPA of 2.34 and a standard deviation of 0.06,
and 20 day students, with a sample mean GPA of 2.31 and a standard deviation of 0.04.
test statistic =
[three decimal accuracy]
Transcribed Image Text:Test the daim 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 2 PD Ho:HN < Hp Ho:µN = µp Ho:PN < Pp Ho:PN = Pp Ho:µN 2 HD H1:PN < PD H:HN > Hp H1:µn + µp H1:PN > Pp H1:PN # Pp H1:µN < PD The test is: right-tailed two-tailed left-tailed The sample consisted of 30 night students, with a sample mean GPA of 2.34 and a standard deviation of 0.06, and 20 day students, with a sample mean GPA of 2.31 and a standard deviation of 0.04. test statistic = [three decimal accuracy]
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