If 1 person is randomly selected from the general population, find the probability that they score 131 or more. 2. If 4 people are randomly selected, find the probability that their mean IQ score is at least 131. 3 If 4 people did have an average of 131 or above, is it likely that the sample is actually random?

If 1 person is randomly selected from the general population, find the probability that they score 131 or more. 2. If 4 people are randomly selected, find the probability that their mean IQ score is at least 131. 3 If 4 people did have an average of 131 or above, is it likely that the sample is actually random?

A First Course in Probability (10th Edition)

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ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Membership in Mensa requires an IQ of at least 131. IQ scores on Mensa’s test are normally distributed with a mean of 100 and a standard deviation of 15 .

1. If 1 person is randomly selected from the general population, find the probability that they score 131 or more.

2. If 4 people are randomly selected, find the probability that their mean IQ score is at least 131.

3 If 4 people did have an average of 131 or above, is it likely that the sample is actually random?

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