Test the claim that the mean GPA of night students is smaller than the mean GPA of day students at the 0.01 significance level. The null and alternative hypothesis would be:   H0:μN=μDH0:μN=μD H1:μN≠μDH1:μN≠μD H0:pN≥pDH0:pN≥pD H1:pNμDH1:μN>μD H0:pN=pDH0:pN=pD H1:pN≠pDH1:pN≠pD H0:μN≥μDH0:μN≥μD H1:μN<μDH1:μN<μD H0:pN≤pDH0:pN≤pD H1:pN>pDH1:pN>pD Incorrect The test is:   left-tailed two-tailed right-tailed Correct The sample consisted of 35 night students, with a sample mean GPA of 2.23 and a standard deviation of 0.05, and 35 day students, with a sample mean GPA of 2.24 and a standard deviation of 0.07. The test statistic is:  (to 2 decimals) The p-value is:  (to 2 decimals) Based on this we: Fail to reject the null hypothesis Reject the null hypothesis

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Test the claim that the mean GPA of night students is smaller than the mean GPA of day students at the 0.01 significance level.

The null and alternative hypothesis would be:

 

H0:μN=μDH0:μN=μD
H1:μN≠μDH1:μN≠μD
H0:pN≥pDH0:pN≥pD
H1:pN<pDH1:pN<pD
H0:μN≤μDH0:μN≤μD
H1:μN>μDH1:μN>μD
H0:pN=pDH0:pN=pD
H1:pN≠pDH1:pN≠pD
H0:μN≥μDH0:μN≥μD
H1:μN<μDH1:μN<μD
H0:pN≤pDH0:pN≤pD
H1:pN>pDH1:pN>pD
Incorrect



The test is:

 

left-tailed
two-tailed
right-tailed
Correct



The sample consisted of 35 night students, with a sample mean GPA of 2.23 and a standard deviation of 0.05, and 35 day students, with a sample mean GPA of 2.24 and a standard deviation of 0.07.

The test statistic is:  (to 2 decimals)

The p-value is:  (to 2 decimals)

Based on this we:

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