IQ of Elementary School Children Narrative

question 62

Essay

IQ of Elementary School Children Narrative
In a particular large school system, the average IQ of elementary school children is 105 and the standard deviation is 15. A sample of 81 children is randomly selected from elementary schools within the system.
-Refer to IQ of Elementary School Children Narrative. What is the probability that the average IQ of this sample is below 108?

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