In Problem 13.5 on page 531, you used the summated rating of a restaurant to predict the

Question:

In Problem 13.5 on page 531, you used the summated rating of a restaurant to predict the cost of a meal. The data are stored in Restaurent. Using the results of that problem, b1 = 1.2409 and Sb1 = 0.1421.
a. At the 0.05 level of significance, is there evidence of a linear relationship between the summated rating of a restaurant and the cost of a meal?
b. Construct a 95% confidence interval estimate of the population slope, β1.