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Suppose that IQ is normally distributed with a population mean equal to 100 and a population standard deviation equal to 15. 1. What is the

Suppose that IQ is normally distributed with a population mean equal to 100 and a population standard deviation equal to 15.

1. What is the IQ for a person with one standard deviation above the mean? How about one below? Two above? Two below? Three above? Three below?

Finally, convert each value obtained above to its Z-score. Using the Z-scores from above, how many standard deviations are to the right of the mean? Left? Total?

What is the probability that a person has an IQ greater than 100?

What is the probability that a person has an IQ in between 85 and 115?

What is the probability that a person has an IQ in b/w 70 and 130? How about 55 to 145?

What is the probability that a person has an IQ greater than 145?

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