Question

In: Statistics and Probability

2. A researcher for Netflix wants to know if people have different preferences for two shows:...

2. A researcher for Netflix wants to know if people have different preferences for two shows: Friends and The Office.  The researcher recruits 7 people.  Each person watches five minutes of Friends and rates the show on a scale of 0-10, where 0 means they hate it and 10 means they love it.  Then each person watches five minutes of The Office rates the show on a scale of 0-10.  Assume that you are working at the .05 level of significance. The researcher obtains the following data:

Subject

Rating of Friends

Rating of The Office

1

7

10

2

2

1

3

4

6

4

9

7

5

5

4

6

1

5

7

6

8

  1. State the appropriate null and alternative hypotheses (in symbols, referring to the population means).       
  1. Identify the critical value(s).

  1. Calculate  .

  1. Calculate the t statistic.  (The appropriate standard error that you need in the denominator when you compute t is 0.87.)
  1. State your decision about the null hypothesis.
  1. State the conclusion in terms of the alternative hypothesis (research question).
  1. Compute Cohen’s d as an estimate of the effect size.

Solutions

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