Question

A courier service company has found that their delivery time of parcels to clients is
approximately normally distributed with a mean delivery time of 50 minutes and a variance of
25 minutes (squared).
a) What is the probability that a randomly selected parcel will take 60 minutes to
deliver?
b) What is the probability that a randomly selected parcel will take between 38.75 and
55 minutes to deliver?
c) What is the probability that a randomly selected parcel will take more than 36.25
Minutes to deliver?
d) What is the probability that a randomly selected parcel will take more than 59.25
minutes to deliver?

Answer 1

Answer:

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Answer 2

sorry bro i don't know this answer