Refer to exercise 5 where the following data were used to investigate whether higher prices are generally associated with higher ratings for elliptical trainers (Consumer Reports, February 2008). a....

Refer to exercise 5 where the following data were used to investigate whether higher prices

are generally associated with higher ratings for elliptical trainers (Consumer Reports,

February 2008).

a. Compute the coefficient of determination r2.

b. Did the estimated regression equation provide a good fit? Explain.

c. What is the value of the sample correlation coefficient? Does it reflect a strong or weak

relationship between price and rating?