Question

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
5	4
8	5
5	6
8	6
11	5
4	6
3	3
7	5
2	11
12	3

(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)

r=-0.473(rounded)

(B)

coefficient of determenation=R^2=(r)^2

=(-0.4733)^2

=0.22401289

=0.224(rounded)

(C)

the p value is (0.3974) is gretaer than alpha value(0.05) then option a is correct

retain the null hypothesis