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A researcher at a college hears students complain that they don’t have enough time to in...

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Statistics

A researcher at a college hears students complain that theydon’t have enough time to in their week to study. He believes thatthe students at the college are spending much more time onFacebook, Twitter, and Instagram than they did three years ago. Heknows that three years ago, the mean number of hours per weekstudents spent of social media was 15.1 hours. He takes a sample of16 students and finds they spend 23.3 hours per week on socialmedia with SS=240.

a)Conduct a t-test to see is his theory is correct. (Be sure toshow all 4 steps of a hypothesis test. Also be sure to consider ifthis is a one-tailed or two-tailed test.)

b)Measure effect size using Cohen's D.

c)Measure effect size using percentage of variance explained(r).

d)Estimate effect size by constructing 90% an confidenceinterval.

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