Question: IQ scores based on the Wechsler Intelligence Scale for Children (WISC) are known to be normally distributed with = 100 and = 15.

IQ scores based on the Wechsler Intelligence Scale for Children (WISC) are known to be normally distributed with μ = 100 and σ = 15.

How many of the intervals do you expect to include the population mean? How many of the intervals actually include the population mean?

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