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Scores for men on the verbal portion of the SAT-I test are normally distributed with a...

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Statistics

Scores for men on the verbal portion of the SAT-I test arenormally distributed with a mean of 509 and a standard deviation of112.
(a)  If 1 man is randomly selected, find the probabilitythat his score is at least 585.

(b)  If 16 men are randomly selected, find theprobability that their mean score is at least 585.

16 randomly selected men were given a review course before takingthe SAT test. If their mean score is 585, is there strong evidenceto support the claim that the course is actually effective?
(Enter YES or NO)  

Answer & Explanation Solved by verified expert
3.9 Ratings (374 Votes)
Solution Given thatmean 509standard deviation 112a P x 585 1 P x 585 1 P x 585 509 112 1 P    See Answer
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