A university administrator randomly selected 10 freshmen and 10 seniors and aske

Question

A university administrator randomly selected 10 freshmen and 10 seniors and asked them how satisfied they are with life at Ohio University on a 1 (not at all satisfied) to 9 (very satisfied) scale. The administrator's date is below: These results seem to indicate that: A. freshmen agree more with each other about their life satisfaction than do seniors B. seniors agree more with each other about their life satisfaction than do freshmen C. all freshman tend to be satisfied with life D. freshmen and seniors experience equal life satisfaction E. none of the above are accurate

Explanation / Answer

Sample N Mean StDev SE Mean
Freshermen(1) 10 3.00 3.16 1.0
Senior(2) 10 8.00 1.00 0.32

Difference = mu (1) - mu (2)
Estimate for difference: -5.00
95% upper bound for difference: -3.10
T-Test of difference = 0 (vs <): T-Value = -4.77 P-Value = 0.000 DF = 10

Conclusion:

We can not accept the null hypothesis at 0.05 level of significance and accept the alternative.

Correct choice from the given is B: Seniors agree more with each other about their satisfaction than do freshmen.

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