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3 years ago

11

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 23 options:

1 answer:

Evgesh-ka [11]3 years ago

4 0

<span>Confidence Interval = (p-E, p+E) = (0.71-0.025, 0.71+0.025) = (0.685, 0.735) </span>

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Answer:

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Given

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Required

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