For Exercises 15–24, use the data and the regression equations that you calculated in the Section 13.1 exercises.

Question 13.93

15. Volume and Weight. For the data from Exercise 39 in Section 13.1, do the following:

  1. Predict the weight of a package that has a volume of 4 cubic meters.
  2. Construct a 95% confidence interval for the population mean weight of all packages that have a volume of 4 cubic meters.

13.2.15

(a) 10.4 kilograms (b) Lower bound: 7.1550 kilograms (Minitab: 7.15453) Upper bound: 13.6450 kilograms (Minitab: 13.6455)