Given that standardized IQ scores are normally distributed (mean=100, sd=15), if John gets a score of...
Given that standardized IQ scores are normally distributed (mean=100, sd=15), if John gets a score of 130, that means that his scores are approximately in the _____ percentile.
Homework Answers
Let X be the standardized IQ score.
Therefore, 
,
The percentile of John's score of x=130 is obtained by:
## by using z table
Therefore the percentile of x=130 is 98th percentile.
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