More pets You’re thinking about getting two dogs and a cat. Assume that annual veterinary expenses are independent and have a Normal model with the means and standard deviations described in Exercise 90.

a) Define appropriate variables and express the total annual veterinary costs you might accrue.

b) Describe the model for this total cost. Be sure to specify the model’s name, expected value, and standard deviation.

c) What is the probability that your total expenses will exceed $400?

d) About how much would a typical year cost you in expenses (give a range)? How much money should you set aside if you wanted to be fairly sure that your annual bill will be covered?