Strawberries II The following data were obtained in an experiment relating the dependent variable, y (texture of strawberries), with x (coded storage temperature). Use the information from Exercise to...

Strawberries II
The following data were obtained in an experiment relating the dependent variable, y (texture of strawberries), with x (coded storage temperature). Use the information from Exercise to answer the following questions:

a. What is the best estimate of σ², the variance of the random error ε?

b. Do the data indicate that texture and storage temperature are linearly related? Use a = .05.

c. Calculate the coefficient of determination, r².

d. Of what value is the linear model in increasing the accuracy of prediction as compared to the predictor,