The IQs of students at Wilson Elementary School were measure

The IQs of students at Wilson Elementary School were measured recently and found to be normally distributed with a mean of 110 and a standard deviation of 11. What is the probability that a student selected at random will have the following IQs? (Round your answers to four decimal places.)

(a) 140 or higher


(b) 125 or higher


(c) between 110 and 125


(d) 90 or less

Solution

The IQs of students at Wilson Elementary School were measured recently and found to be normally distributed with a mean of 110 and a standard deviation of 11. W

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