Test the claim that the mean GPA of night students is smaller than 2.2 at the 0.005 significance level. The null and alternative hypothesis would be:   H0:μ=2.2H0:μ=2.2 H1:μ≠2.2H1:μ≠2.2 H0:μ≥2.2H0:μ≥2.2 H1:μ<2.2H1:μ<2.2 H0:μ≤2.2H0:μ≤2.2 H1:μ>2.2H1:μ>2.2 H0:p=0.55H0:p=0.55 H1:p≠0.55H1:p≠0.55 H0:p≤0.55H0:p≤0.55 H1:p>0.55H1:p>0.55 H0:p≥0.55H0:p≥0.55 H1:p<0.55H1:p<0.55 The test is:   right-tailed left-tailed two-tailed Based on a sample of 20 people, the sample mean GPA was 2.18 with a standard deviation of 0.06 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 Submit Question Question 16

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Test the claim that the mean GPA of night students is smaller than 2.2 at the 0.005 significance level.

The null and alternative hypothesis would be:

 

H0:μ=2.2H0:μ=2.2
H1:μ≠2.2H1:μ≠2.2
H0:μ≥2.2H0:μ≥2.2
H1:μ<2.2H1:μ<2.2
H0:μ≤2.2H0:μ≤2.2
H1:μ>2.2H1:μ>2.2
H0:p=0.55H0:p=0.55
H1:p≠0.55H1:p≠0.55
H0:p≤0.55H0:p≤0.55
H1:p>0.55H1:p>0.55
H0:p≥0.55H0:p≥0.55
H1:p<0.55H1:p<0.55



The test is:

 

right-tailed
left-tailed
two-tailed



Based on a sample of 20 people, the sample mean GPA was 2.18 with a standard deviation of 0.06

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
Submit Question Question 16
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