Question

It has become common for shoppers to comparison shop using the Internet. In a survey, respondents 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. The table below has responses grouped by income level. Complete parts a through c below.

<$30K 206 616 $30K-$49.9K $50K-$74.9K Yes No 109 414 142 264 >$75K 200 413

a) What percent of those earning less than $30K cyber comparison shop? What percent of those earning more than $75K do?

Answer 1

Here we obtained the marginals of each column and then got the percentage of those who cyber comparison shop.