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If X~B(10,0.6) then, find mean and varia...

If `X~B(10,0.6)` then, find mean and variance of X.

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The correct Answer is:
6, 2.4
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Knowledge Check

  • If X is a Poisson variate such that P(X=2)=9P(X=4) , then the mean and variance of X are

    A
    `1,1`
    B
    `2,2`
    C
    `(2)/(3),(2)/(3)`
    D
    `(2)/(sqrt 3),(2)/(sqrt 3)`

  • If 10 coins are tossed then mean and variance of x and x denotes the number of heads is

    A
    `5 , (5)/(2)`
    B
    ` 5 , 5 `
    C
    `10 , 5`
    D
    `5 , 10`

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    Let X be a random variable such that P(X=-2)=P(X-1)=P(X=2)=P(X=1)=(1)/(6) and P(X=0)=(1)/(3) . Find the mean and variance of X.

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