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4. Study Time. A university states the mean number of study hours per week for full-time...

4. Study Time. A university states the mean number of study hours per week for full-time student (12 units +) should be at least 20 hours. Based on the random sample of weekly study hours for the 8 full-time students listed below, is the mean study time for all full-time students less than the recommended amount? ( use a=.10, assume sample comes from a population that is normal)

21.8    17.6   21.6   16.9   15.4   19.4   22.6   18.1

Check Assumptions:

Ho:

Diagram:

H1:

Statistical Variables:

Test Statistic:

P-Value:

Conclusion and Interpretation:

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