If X1, X2,.., X100 are 100 random variables that are identically, independently and normally distributed with mean
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Question:
If X1, X2,.., X100 are 100 random variables that are identically, independently and normally distributed with mean = 150 and variance 2 = 100.
-what is the expected value and standard deviation of their average?
-What is the approximate probability that this average lies between 147 and 153?
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