A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per week) in a sample of 10 students. The following table lists the hypothetical results of this study.
Internet use ________________________________Social Interaction
____X___________________________________________Y_______
6 .................................................................4
8 .................................................................6
5 .................................................................7
7 .................................................................6
12 .................................................................5
4..................................................................7
3..................................................................3
6..................................................................5
2................................................................10
11 .................................................................3
(a) Compute the Pearson correlation coefficient.
(b) Compute the coefficient of determination.
(c) Using a two-tailed test at a .05 level of significance, state the decision to retain or reject the null hypothesis.