45. Test the claim that the mean GPA of night students is significantly different 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:μN=μDH0:μN=μD H1:μN≠μDH1:μN≠μD H0:pN=pDH0:pN=pD H1:pN≠pDH1:pN≠pD H0:pN≥pDH0:pN≥pD H1:pNμDH1:μN>μD H0:pN≤pDH0:pN≤pD H1:pN>pDH1:pN>pD The test is: left-tailed
45. Test the claim that the mean GPA of night students is significantly different 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:μN=μDH0:μN=μD H1:μN≠μDH1:μN≠μD H0:pN=pDH0:pN=pD H1:pN≠pDH1:pN≠pD H0:pN≥pDH0:pN≥pD H1:pNμDH1:μN>μD H0:pN≤pDH0:pN≤pD H1:pN>pDH1:pN>pD The test is: left-tailed
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45. Test the claim that the mean GPA of night students is significantly different 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:μN=μDH0:μN=μD
H1:μN≠μDH1:μN≠μD H0:pN=pDH0:pN=pD
H1:pN≠pDH1:pN≠pD 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 |
The test is:
left-tailed
two-tailed
right-tailed
The sample consisted of 55 night students, with a sample mean GPA of 3.47 and a standard deviation of 0.05, and 60 day students, with a sample mean GPA of 3.5 and a standard deviation of 0.06.
test statistic = | |
[three decimal accuracy] |
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