0/1 pts ncorrect Question 2 The university is interested in investigating whethe
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0/1 pts ncorrect Question 2 The university is interested in investigating whether the mean GPA of all college students differs for various years in college. Samples were selected and the data was analyzed in Statistix to determine if the average GPA of sophomores, juniors, and seniors differed. The analysis is shown below One-Way AOV for GPA by Year Source DF SSMS F P Year 2 2.7978 1.39889 9.81 0.0001 Error 85 12.1163 0.14255 Total 87 14.9141 Grand Mean 3.2259 CV 11.70 Bonferroni All-Pairwise Comparisons Test of GPA by Year Year Sophomore 3.7500 A Mean Homogeneous Groups Junior3.1847 B Senior 3.1360 B Alpha 0.05 Which conclusion is correct when conducting the test of hypothesis at alpha.01?Explanation / Answer
Sol:
From ouput:
F(2,85)=9.81 p=0.0001
alpha=0.01
p<0.01
Reject Ho.
Accept H1
the mean GPA of all college students differ for various years in college.
MARK OPTION A
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