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Assume that adults have IQ scores that are normally distributed with a mean of 101.4 and a standard deviation 17.5. Find the first quartile Q1,

Assume that adults have IQ scores that are normally distributed with a mean of

101.4

and a standard deviation

17.5.

Find the first quartile

Q1,

which is the IQ score separating the bottom 25% from the top 75%.

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