Question

Test the claim that the mean GPA of night students is smaller than 2.3 at the. 10 significance level. The null and alternative hypothesis would be: Ho:p = 0.575 H :p = 0.575 Hou = 2.3 Horn = 2.3 H: = 2.3 Ho: p = 0.575 H: p0.575 H:p > 0.575 H: > 2.3 H: 4 < 2.3 H: *2.3 Hp < 0.575 eos The test is: left-tailed right-tailed two-tailed Based on a sample of 30 people, the sample mean GPA was 2.25 with a standard deviation of 0.02 The test statistic is: (to 2 decimals) The critical value is: (to 2 decimals) IG only Based on this we: O Reject the null hypothesis O Fail to reject the null hypothesis Low Playli

Answer 1

d = 0.10 As Crivent na 30 Mean (X)= 2.25 S = 0.02 Hool=2.3 The null and alternative hypothesis would be : Hei M 22:3 (left taiked test) The test is: Left tailed Test statistic : = 2.25 – 2:3 slun 0.02/130 The test statistic is E13.69 t = x-u - 13.69 critical value : (of -n-1-30-) = 29) te = tem df = tolo) 29 = 1-311 (using t-table; The critical value is [1.31 Based on this we: Fail to ovject the hull hypothesis