The behavioral scientists are interested in whether depressed people undergoing group therapy will perform a different number of activities of daily living after group therapy. Therefore, the behavioral scientists randomly selected 12 depressed clients to undergo a 6-week group therapy program. Determine whether the average number of activities of daily living (shown below) obtained after therapy is significantly different from a mean number of activities of 14 that is typical for similar depressed people. Test the difference at the .05 significance and at the .01 level.
Use the one-sample t hypothesis test in stats.blue.
17
15
12
21
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14
13
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