The Normal Distribution Has a Greater Percentage of Its Area

question 146

Multiple Choice

The normal distribution has a greater percentage of its area close to the mean and much less in the tails.
-Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15 (as on the Wechsler test) . Find P30, which is the IQ score separating the bottom 30% from the top 70%.

• A) 92.8
• B) 91.4
• C) 91.9
• D) 92.2

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Net Cash

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