Question

Test the claim that the mean GPA of night students is significantly different than 2.8 at...

Test the claim that the mean GPA of night students is significantly different than 2.8 at the 0.02 significance level. The null and alternative hypothesis would be: H 0 : p ≤ 0.7 H0:p≤0.7 H 1 : p > 0.7 H1:p>0.7 H 0 : p ≥ 0.7 H0:p≥0.7 H 1 : p < 0.7 H1:p<0.7 H 0 : p = 0.7 H0:p=0.7 H 1 : p ≠ 0.7 H1:p≠0.7 H 0 : μ ≥ 2.8 H0:μ≥2.8 H 1 : μ < 2.8 H1:μ<2.8 H 0 : μ = 2.8 H0:μ=2.8 H 1 : μ ≠ 2.8 H1:μ≠2.8 H 0 : μ ≤ 2.8 H0:μ≤2.8 H 1 : μ > 2.8 H1:μ>2.8 The test is: left-tailed right-tailed two-tailed Based on a sample of 80 people, the sample mean GPA was 2.79 with a standard deviation of 0.03 The p-value is: (to 2 decimals) Based on this we: Reject the null hypothesis Fail to reject the null hypothesis

Homework Answers

Answer #1

null and alternative hypothesis would be:  H 0 : ? = 2.8 ; H 1 : ? ? 2.8

The test is: two-tailed

from above p value =0.0029 ~ 0.00

Based on this we: Reject the null hypothesis

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