Statistics Solutions

[Steps Shown] X_1,...,X_64 are identically distributed independent random variables such that E(X_i)=3.1 and Var(X_i)=9. What is the standard deviation of

Question: \[{{X}_{1}},...,{{X}_{64}}\] are identically distributed independent random variables such that

\[E({{X}_{i}})=3.1\] and \[Var({{X}_{i}})=9\] . What is the standard deviation of their average?

In other words, what is the standard deviation of \[X=\] \[\frac{{{X}_{1}}+...+{{X}_{64}}}{64}\] ?

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Solution: The downloadable solution consists of 1 pages
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