IQ test scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the x-score that corresponds to a z-score of -1.645.
A)75.3
B)79.1
C)82.3
D)91.0

Name: IQ test scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the x-score that corresponds to a z-score of -1.645. A)75.3 B)79.1 C)82.3 D)91.0
Brand: Quizplus
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Question

Quizplus · Accepted Answer

The x-score is calculated as the z-score multiplied by the standard deviation and added to the mean. So, x = z * s + m = -1.645 * 15 + 100 = 75.3.

IQ Test Scores Are Normally Distributed with a Mean of 100