The Intelligence Quotient (IQ) Test Scores Are Normally Distributed with a Mean

question 71

Multiple Choice

The Intelligence Quotient (IQ) test scores are normally distributed with a mean of 100 and a standard deviation of 15. You enrolled in a class of 25 students. What is the probability that the class' average IQ exceeds 130?

• A) 0.0228
• B) 0.9772
• C) Approximately zero
• D) 0.9544

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