Test the claim that the mean GPA of night students is smaller than 2.7 at the 0.10 significance level. The null and alternative hypothesis would be:   H0:μ=2.7H0:μ=2.7 H1:μ≠2.7H1:μ≠2.7 H0:p=0.675H0:p=0.675 H1:p≠0.675H1:p≠0.675 H0:p≤0.675H0:p≤0.675 H1:p>0.675H1:p>0.675 H0:μ≤2.7H0:μ≤2.7 H1:μ>2.7H1:μ>2.7 H0:p≥0.675H0:p≥0.675 H1:p<0.675H1:p<0.675 H0:μ≥2.7H0:μ≥2.7 H1:μ<2.7H1:μ<2.7 The test is:   right-tailed two-tailed left-tailed Based on a sample of 40 people, the sample mean GPA was 2.65 with a standard deviation of 0.07 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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Test the claim that the mean GPA of night students is smaller than 2.7 at the 0.10 significance level.

The null and alternative hypothesis would be:

 

H0:μ=2.7H0:μ=2.7
H1:μ≠2.7H1:μ≠2.7
H0:p=0.675H0:p=0.675
H1:p≠0.675H1:p≠0.675
H0:p≤0.675H0:p≤0.675
H1:p>0.675H1:p>0.675
H0:μ≤2.7H0:μ≤2.7
H1:μ>2.7H1:μ>2.7
H0:p≥0.675H0:p≥0.675
H1:p<0.675H1:p<0.675
H0:μ≥2.7H0:μ≥2.7
H1:μ<2.7H1:μ<2.7



The test is:

 

right-tailed
two-tailed
left-tailed



Based on a sample of 40 people, the sample mean GPA was 2.65 with a standard deviation of 0.07

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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