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20 1 point A grocery store chain has been tracking data on the number of shoppers that use coupons. The data shows that 71%

20 1 point 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. 36 times out of 40 these results were considered accurate to within 2.5%. What is the confidence interval? 16 to 20 15.5 to 20.5 0 .685 to.735 .6975 to 7225

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