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n00835996 n00835996
wrote...
Posts: 346
A week ago
The time at which the mailman delivers the mail to Ace Bike Shop follows a normal distribution with mean 3:00 P.M. and standard deviation of 20 minutes.

A. What is the probability the mail will arrive after 3:35 P.M.?

B. What is the probability the mail will arrive between 2:46 P.M. and 3:07 P.M.?
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bio_manbio_man
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