Short Answer
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.
Find the mean of the sampling distribution of 
.
______________
Find the standard deviation.
______________
What is the probability that the average IQ of this sample is below 108?
______________
Correct Answer:
Verified
Correct Answer:
Verified
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