TheWhole Foods Market grocery store labels its express checkout lanes with a sign saying"10-ish items or less", indicating that customers don't need to worry about havingexactly10 items to use the lane as is the case with other stores. But it is important to make sure that the express lanes don't accept customers with too many items.

The manager of Whole Foods stores in a particular region of the U.S. has been asked to estimate the mean number of items that customers going through the "10-ish items or less" line actually have. She decides to start with a small study. She takes a sample of 111 sales receipts from the "10-ish" lines in a particular store over a few days and finds that the sample mean is 7.2 items, with a standard deviation of 2.5 items.Calculate a95%confidence interval for the true mean number of items that customers bring through the "10-ish items or less" lines.Take all calculations to three (3) decimal places, and report your answers to one (1) decimal place.

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