A grocery store chain has been tracking data on the number of shoppers that use coupons. The data shows that 71% of all shoppers use coupons. 18 times out of 20 these results were considered accurate to within 2.5%.

What is the confidence interval?

Question

A grocery store chain has been tracking data on the number of shoppers that use coupons.  The data shows that 71% of all shoppers use coupons.  18 times out of 20 these results were considered accurate to within 2.5%.

What is the confidence interval?

kitten_is_back · Answer

http://www.chacha.com/question/a-grocery-store-chain-has-been-tracking-data-on-the-number-of-shoppers-that-use-coupons.-the-data-shows-that-71-%25-of-all-shoppers-use-coupons.-18-times-out-of-20-these-results-were-considered-accurate-to-within-2.5-%25.-what-is-the-confidence-interval%3F-question-23-options%3A15.5-to-20.5.-6975-too.-7225..-685-too.-735.-16-to-20