SOLUTION: Let X1,�,X49 be identically distributed independent random variables with Var(Xi)=36 What is the standard deviation of their average X�=(X1+�+X49)/49?

SOLUTION: Let X1,�,X49 be identically distributed independent random variables with Var(Xi)=36 What is the standard deviation of their average X�=(X1+�+X49)/49?

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Question 1089659: Let X1,�,X49 be identically distributed independent random variables with Var(Xi)=36
What is the standard deviation of their average X�=(X1+�+X49)/49?
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

The standard deviation is the square root of the variance.

John

My calculator said it, I believe it, that settles it

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