Question

Scores for men on the verbal portion of the SAT-I test are
normally distributed with a mean of 509 and a standard deviation of
112.

(a) If 1 man is randomly selected, find the probability that his
score is at least 572.5.

(b) If 10 men are randomly selected, find the probability that
their mean score is at least 572.5.

Answer #1

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