SOLUTION: Hello, I would appreciate it very much to have help with the following question: Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviatio

Question 1142171: Hello,
I would appreciate it very much to have help with the following question:
Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 16. Use the Empirical Rule to determine the following:
A. What percentage of people have an IQ score between 84 and 116?
B. What percentage of people have an IQ score less than 84 or greater than 116?
C. What percentage of people have an IQ score greater than 148?
Thank you
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
The empirical rule known as the 68-95-99.7 rule applies
:
A. The scores are within 1 standard deviation of the mean, 68%
:
B. The scores are 1 - 68 = 32%
:
C. 148 is 3 standard deviations above the mean, 1 - 99.7 = 0.3%
:

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