An intern for the consumer advocacy group in Exercise 3 has decided to make the survey process simpler by calling 150 of the members who attended the symposium on “Food Safety in the 21st Century” recently held in Toronto. The intern has the phone numbers of each attendee, so it will be easy to contact them. He’ll start calling members from the top of the list, which was generated as the members enrolled for the symposium. He has written the following script to read to them:

“As we learned in Toronto, food safety is of utmost importance in the restaurant business today. Given the enormous effort of the Food Safety Institute in developing proper guidelines and educational tools for food professionals, do you agree that food safety has improved in Canada?”

a) What is the population of interest?

b) What is the sampling frame?

c) Point out any problems you see with the sampling procedure and/or the survey itself. What are the potential impacts of these problems?