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A worldwide organization of academics claims that the mean IQ score of its members is 118...

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Statistics

A worldwide organization of academics claims that the mean IQscore of its members is 118 , with a standard deviation of 15 . Arandomly selected group of 35 members of this organization istested, and the results reveal that the mean IQ score in thissample is 115.2 . If the organization's claim is correct, what isthe probability of having a sample mean of 115.2 or less for arandom sample of this size? Carry your intermediate computations toat least four decimal places. Round your answer to at least threedecimal places.

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4.1 Ratings (769 Votes)
118 15 n 35 X 11520 Z X n    See Answer
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