QQuestionStatistics
QuestionStatistics
Sophia's IQ score is 85. She performed as well or better than __________ percent of her agemates.
A) 16
B) 36
C) 50
D) 85
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Answer
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Step 1: Understand the problem
The problem provides Sophia's IQ score and asks for the percentage of her age-mates who scored below her level. To solve this problem, we need to first determine the z-score for Sophia's IQ and then use the standard normal table to find the corresponding percentage.
Step 2: Determine the z-score
The formula for calculating the z-score is: We are not given the standard deviation, but assuming it's 15 (typical for IQ tests), we can calculate the z-score:
Final Answer
Sophia performed as well or better than approximately 16% of her agemates.
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