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In a large population of adults, the mean IQ is 122 with a standard deviation of 17. Suppose 40 adults are randomly selected for a

In a large population of adults, the mean IQ is 122 with a standard deviation of 17. Suppose 40 adults are randomly selected for a market research campaign. (Round all answers to 4 decimal places, if needed.

The distribution of the sample mean IQ isapproximately normalwith a mean ofand a standard deviation of?.

(d) The probability that the sample mean IQ is greater than 121 is?.

(e) The probability that the sample mean IQ is between 121 and 124 is?.

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