A worldwide organization of academics claims that the mean IQ score of its members is 118, with a standard deviation of 16. A randomly selected group of 35 members of this organization is tested, and the results reveal that the mean IQ score in this sample is 117.2. If the organization's claim is correct, what is the probability of having a sample mean of 117.2 or less for a random sample of this size? Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places.

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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A worldwide organization of academics claims that the mean IQ score of its members is 118, with a standard deviation of 16. A
randomly selected group of 35 members of this organization is tested, and the results reveal that the mean IQ score in this sample
is 117.2. If the organization's claim is correct, what is the probability of having a sample mean of 117.2 or less for a random sample
of this size?
Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places.
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Transcribed Image Text:A worldwide organization of academics claims that the mean IQ score of its members is 118, with a standard deviation of 16. A randomly selected group of 35 members of this organization is tested, and the results reveal that the mean IQ score in this sample is 117.2. If the organization's claim is correct, what is the probability of having a sample mean of 117.2 or less for a random sample of this size? Carry your intermediate computations to at least four decimal places. Round your answer to at least three decimal places. Explhation Check 2022 McGraw Hill LLC. All Rights Reserved. Terms of Use I Privacy Center Accessibility MacBook Air DII DD 80 F12 esc F10 F11 F6 F8 F9 F7 F2 F3 F4 F5 F1 & ( @ 1 2 4 5 6 7 8 9 + %24
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