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In: Statistics and Probability

The time needed to complete a final t3st in a particular college course used to be...

The time needed to complete a final t3st in a particular college course used to be with a mean of 80 minutes and a standard deviation of 10 minutes.
a. What is the probability of completing the 3xam in one hour or less?
b. What is the probability that a student will complete the 3xam in more than 60 minutes but less than 75 minutes?

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