Question: A random variable follows the normal probability distribution with a mean of 80 and a standard deviation of 20. What is the probability that a

A random variable follows the normal probability distribution with a mean of 80 and a standard deviation of 20. What is the probability that a randomly selected value from this population

a. Is less than 90?

b. Is less than 65?

c. Is more than 110?

d. Is more than 40?

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a Z 90 20 Px 90PZ 050 06915 b Z X 65 0 c ... View full answer

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