Multiple Choice
Scores of adults aged 60 to 64 on a common IQ test are approximately Normally distributed with mean 90 and standard deviation 15.
What range of IQ scores contains the central 95% of the population of adults aged 60 to 64?
A) 75 to 105
B) 60 to 120
C) 30 to 150
D) 45 to 135
Correct Answer:
Verified
Correct Answer:
Verified
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