Question

Test the claim that the mean GPA of night students is significantly different than 2.7 at the 0.02 significance level. The null and alternative hypothesis would be: H 0 : μ ≤ 2.7 H 1 : μ > 2.7 H 0 : p ≥ 0.675 H 1 : p < 0.675 H 0 : p ≤ 0.675 H 1 : p > 0.675 H 0 : μ ≥ 2.7 H 1 : μ < 2.7 H 0 : μ = 2.7 H 1 : μ ≠ 2.7 H 0 : p = 0.675 H 1 : p ≠ 0.675 The test is: left-tailed two-tailed right-tailed Based on a sample of 30 people, the sample mean GPA was 2.75 with a standard deviation of 0.07 The p-value is: (to 2 decimals) keep getting this wrong. please explain Based on this we: Fail to reject the null hypothesis Reject the null hypothesis

I keep getting this question wrong. please explain more in detail how to get p value.

Answer 1

Let denotes the mean GPA of night students.

This is a two tailed test.

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