Chapter 3, Problem 2E

Cyber comparison shopping It has become common for shoppers to comparison shop using the Internet. Respondents to a Pew survey in 2013 who owned cell phones were asked whether they had, in the past 30 days, looked up the price of a product while they were in a store to see if they could get a better price somewhere else. Here is a table of responses by income level:

1. a) What percent of those earning less than $30K cyber comparison shop? What percent of those earning more than $75K do?
2. b) What percent of those who cyber comparison shop earn less than $30K?
3. c) Is it reasonable to assume that 28% of all shoppers use their phones to cyber comparison shop? Why or why not?