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[" E(X)."],[" Let X denote the sum of th...

[" E(X)."],[" Let X denote the sum of the numbers obtined when two fair difice are rolled."],[" Find the variance and standard deviation of "x" ."],[" A class has "15" students whose ages are "14,17,15,14,21,17,19,20,16,18,20]

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Let X denote the sum of the numbers obtained when two fair dice are rolled. Find the variance and standard deviation of X.

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Let X denote the sum of the numbers obtained when two fair dice are rolled. Find the variance and standard deviation of X.

Let X denote the sum of the numbers obtained when two fair dice are rolled. Find the variance and standard deviation of X.

Let X denote the sum of the numbers obtained when two fair dice are rolled. Find the variance and standard deviation of X.

Let X denote the sum of the numbers obtained when two fair dice are rolled. Find the variance and standard deviation of X.