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The time spent by students working on this exam can be approximated by a normal random...

The time spent by students working on this exam can be approximated by a normal random variable
with mean value μ = 60 minutes and standard deviation σ = 5 minutes.


(a) What is the probability that a student finishes this exam in less than 50 minutes?
(b) What is the probability that a student spends between 60 minutes and 70 minutes taking this
exam?

Math   Statistics-And-Probability   
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