A fair die is tossed. Let X denote twice...

A fair die is tossed. Let X denote twice the number appearing. Find the probability distribution, mean and variance of X.

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RD SHARMA ENGLISH-MEAN AND VARIANCE OF A RANDOM VARIABLE -All Questions

Pair of fair dice is thrown. Let X be the random variable which denote...
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A fair coin is tossed four times. Let X denote the number of heads ...
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A fair die is tossed. Let X denote twice the number appearing. Find...
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A fair die is tossed. Let X denote 1 or 3 according as an odd or an ev...
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A die is tossed twice. A success is getting an odd number on a rand...
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Three cards are drawn at random (without replacement) from a well shuf...
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An urn contains 5 red 2 black balls. Two balls are randomly drawn, ...
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Two numbers are selected are random (without replacement) from posit...
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Write the values of a for which the following distribution of probabil...
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Find the mean of the following probability distribution: X=xi :\ \ ...
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In a single throw of a dice; if X denotes the number on its upper face...
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If the probability distribution of a random variable X is given by X=x...
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Find the mean of the following probability distribution: X=xi :\ \ 1 \...
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If the probability distribution of a random variable X is as given bel...
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A random variable X has the following probability distribution: X=xi :...
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A random variable X has the following probability distribution: Values...
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A random variable has the following probability ...
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A random variate X takes the values 0, 1, 2, 3 and its mean is 1.3. If...
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A random variable has the following probability distribution: X=xi :\...
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If X is a random variable with probability distribution as given below...
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