A department store conducted a study regarding the mean

Last updated: 7/9/2022

A department store conducted a study regarding the mean distance customers live from the store. The store randomly selected 230 customers and found they lived a mean distance of 18.1 miles from the store. The department also found the standard deviation of the sample to be 3.6 miles. What is the margin of error, assuming a 90% confidence level? A. +0.24 B. +0.47 C. ±0.36 D. ±0.39