Retail stores experience their heaviest returns on December 26 and December 27 each year.

Retail stores experience their heaviest returns on December 26 and December 27 each year. Most are gifts that, for some reason, did not please the recipient. The number of items returned, by a sample of 30 persons at a large discount department store, are observed and the summary statistics below are obtained.

n = 30

x (x with a line over it ) = 2,358

s = 1.202

Determine a 98% confidence interval for  the population mean number of items returned.

Confidence interval = ( , )