5.61 The paper “Effects of Canine Parvovirus (CPV) on Gray Wolves in Minnesota” (Journal of Wildlife Management

[1995]: 565–570) summarized a regression of y 5 percentage of pups in a capture on x 5 percentage of CPV prevalence among adults and pups. The equation of the least-squares line, based on n 5 10 observations, was y⁄

5 62.9476 2 0.54975x, with r2 5 .57.

a. One observation was (25, 70). What is the corresponding residual?

b. What is the value of the sample correlation coefficient?

c. Suppose that SSTo 5 2520.0 (this value was not given in the paper). What is the value of se?