Question

Test the claim that the mean GPA of night students is smaller than the mean GPA of day students at the 0.05 significance level, The null and alternative hypothesis would he: HPxPD Ho: Un = yd H: PN PD HH:My CMD HUN MD Hai Py = PD HIPN Po H.Mn + My H.Py > Po H. x > Hp H.: 4n <H H.:Py + P The test is: right-tailed left-tailed two-tailed The sample consisted of 18 night students, with a sample mean GPA of 2.32 and a standard deviation of 0.05 and 10 day students, with a sample mean GPA of 2.34 and a standard deviation of 0.07. lest statistic [three decimal accuracy p-value = [three decimal accuracyl Based on this we: Fail to reject the null hypothesis Reject the null hypothesis

Answer 1

sal. The null and alternative hypothesis is- Ho: Maz Mo Ha! Mnk Mo Coption (CJ is correct) This is left -tailed test. ne - 18 m2 = 20 XL = 9.32 2 -2.34 Si= 6.05 S2 - 0.07 Test - Statistic (at) = X - X Sg? S. mi + n2 11 -0.79752 १.32-2.34) (0.05)?. 10.07) 18 + lo t -0.798 P-value ya d: 0.05, dta ni + mg - 2 = 26 P-value 0.9169 D-value Y a=0.05. Fail to reject the null hypothesis.