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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.)