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IQ scores are normally distributed with a mean of 105 and a standard deviation of 18. A

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IQ scores are normally distributed with a mean of 105 and a standard deviation of 18.
Assume that many samples of size n are taken from a large population of people and the mean IQ score is computed for each sample.

If the sample size is n=49​, find the mean and standard deviation of the distribution of sample means

 
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