Mathematics, 26.12.2019 05:31 kadenbaker4788
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 587 .
(b) if 20 men are randomly selected, find the probability that their mean score is at least 587 .
20 randomly selected men were given a review course before taking the sat test. if their mean score is 587 , is there a strong evidence to support the claim that the course is actually effective?
(enter yes or no)
Answers: 2
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Scores for men on the verbal portion of the sat-i test are normally distributed with a mean of 509 a...
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