Thank you for visiting Assume that adults have IQ scores that are normally distributed with a mean of 97 8 and a standard deviation of 15 2 Find the. This page is designed to guide you through key points and clear explanations related to the topic at hand. We aim to make your learning experience smooth, insightful, and informative. Dive in and discover the answers you're looking for!
Answer :
In this problem, we have a normal distribution with:
• mean μ = 97.8,
,• standard deviation σ = 15.2
The first quartile Q1 is given by the following formula:
[tex]Q_1=\mu-0.675\cdot\sigma\text{.}[/tex]Replacing the data of the problem, we get:
[tex]Q_1=97.8-0.675\cdot15.2=87.54._{}[/tex]Answer
The first quartile is 87.54.
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