Chapter 15.2, Problem 76E

In Exercises 15.70–15.80, use the technology of your choice to do the following tasks.

1. a. Decide whether you can reasonably apply the regression t-test. If so, then also do part (b).
2. b. Decide, at the 5% significance level, whether the data provide sufficient evidence to conclude that the predictor variable is useful for predicting the response variable.

15.76 PCBs and Pelicans. Use the data points given on the WeissStats site for shell thickness and concentration of PCBs for 60 Anacapa pelican eggs referred to in Exsercise 15.40.