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The number of letters handled daily by a post office is normally distributed with a mean...

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Basic Math

The number of letters handled daily by a post office is normallydistributed with a mean of 20,000 letters and a standard deviationof 100 letters. Find the percent of days on which the post officehandles:

A.) more than 20,200 letters

B.) fewer than 19,900 letters

C.) Between 19,950 and 20,050 letters

D.) between 20,100 and 20,150 letters

Answer & Explanation Solved by verified expert
3.6 Ratings (607 Votes)
SolutionGiven thatmean 20000lettersstandard deviation 100 lettersA P x 20200 1 P x 124 1 P x 20200 20000 100    See Answer
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