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# A hotel chain wants to estimate the mean number of rooms rented daily in a given month.

A hotel chain wants to estimate the mean number of rooms rented daily in a given month. The population of rooms rented daily is assumed to be normally distributed for each month with a standard deviation of 24 rooms.

During February, a sample of 25 days has a sample mean of 37 rooms.

The sampling error of a 99% confidence interval for the mean number of rooms rented daily in a given month is ________.

Pls show the calculation and answer. Thanks.