Question

7.) 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
7	3
8	5
6	8
8	6
13	5
5	6
2	3
7	6
3	10
12	2

(a) Compute the Pearson correlation coefficient. (Round your answer to three decimal places.)


(b) Compute the coefficient of determination. (Round your answer to three decimal places.)


(c) Using a two-tailed test at a 0.05 level of significance, state the decision to retain or reject the null hypothesis.

Retain the null hypothesis

.Reject the null hypothesis.    

Answer 1

a)coefficient of correlation r=-0.3893

b)coefficient of determination r²=0.1515

c)

p value > 0.05 fail to reject H0

retain Ho