What is the likelihood of selecting a sample of 25 weeks and finding the sample mean to be 1,100 or less?

What is the likelihood of selecting a sample of 25 weeks and finding the sample mean to be 1,100 or less?

The manager
of Tee Shirt Emporium reports that the mean number of shirts sold per week is
1,170 with a standard deviation of 315. The distribution of sales follows the
normal distribution.

What is the
likelihood of selecting a sample of 25 weeks and finding the sample mean to
be 1,100 or less?(Round z value to 2 decimal
places and final answer to 4 decimal places.)


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