Assume that adults have IQ scores that are normally distributed with a mean of 104.9 and a standard deviation 21.5. Find the first quartile Q₁, which is the IQ score separating the bottom 25% from the top 75%. (Hint: Draw a graph.) The first quartile is (Type an integer or decimal rounded to one decimal place as needed.)

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Assume that adults have IQ scores that are normally distributed with a
mean of 104.9 and a standard deviation 21.5. Find the first quartile Q₁,
which is the IQ score separating the bottom 25% from the top 75%. (Hint:
Draw a graph.)
The first quartile is
(Type an integer or decimal rounded to one decimal place as needed.)
Transcribed Image Text:Assume that adults have IQ scores that are normally distributed with a mean of 104.9 and a standard deviation 21.5. Find the first quartile Q₁, which is the IQ score separating the bottom 25% from the top 75%. (Hint: Draw a graph.) The first quartile is (Type an integer or decimal rounded to one decimal place as needed.)
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