est the claim that the mean GPA of night students is significantly different than 2.4 at the 0.05 significance level. The test is based on a sample of 45 people, the sample mean GPA was 2.45 with a standard deviation of 0.04. The null and alternative hypothesis would be: H0:μ≤2.4 H1:μ>2.4 H0:μ=2.4 H1:μ≠2.4 H0:p≥0.6 H1:p<0.6 H0:p≤0.6 H1:p>0.6 H0:μ≥2.4 H1:μ<2.4 H0:p=0.6 H1:p≠0.6 The test is: right-tailed two-tailed left-tailed The test statistic is:  (to 2 decimals) The p-value is:  (to 2 decimals) Based on this we: Reject the null hypothesis Fail to reject the null hypothesis

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Hypothesis Test for a Population Mean

Test the claim that the mean GPA of night students is significantly different than 2.4 at the 0.05 significance level. The test is based on a sample of 45 people, the sample mean GPA was 2.45 with a standard deviation of 0.04.

The null and alternative hypothesis would be:

H0:μ≤2.4
H1:μ>2.4

H0:μ=2.4
H1:μ≠2.4

H0:p≥0.6
H1:p<0.6

H0:p≤0.6
H1:p>0.6

H0:μ≥2.4
H1:μ<2.4

H0:p=0.6
H1:p≠0.6



The test is:

right-tailed

two-tailed

left-tailed



The test statistic is:  (to 2 decimals)

The p-value is:  (to 2 decimals)

Based on this we:

  • Reject the null hypothesis
  • Fail to reject the null hypothesis
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