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What is the probability that a randomly selected

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Reference no: EM132580946

1) Over the past 12 years Professor Axe's exam scores are modeled by a normal distribution with mean = 74.52 and standard deviation = 11.31. What is the probability that a randomly selected exam scored more than 90?

A. 0.0235
B. 0.0613
C. 0.0855
D. 0.9387
E. 0.9144

2) Transaction times at a certain bank have a mean time of = 2.31 minutes amd standard deviation = 1.23 minutes. There are currently 16 customers in the bank. What is the probability that their average waiting time will exceed 3 minutes?

Reference no: EM132580946

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