Question

A survey of shoppers is planned to determine what percentage use credit cards. Prior surveys suggest​ 63% of shoppers use credit cards. How many randomly selected shoppers must we survey in order to estimate the proportion of shoppers who use credit cards to within​ 4% with​ 95% confidence?

Answer 1

Answer: 200

Explanation: with 200 you can take the amount of shopper who use credit card and divide it by 2 giving you a more acurate number