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A random variate X takes the values 0, 1...

A random variate X takes the values 0, 1, 2, 3 and its mean is 1.3. If `P(X= 3) = 2P(X= 1)` and `P(X= 2) = 0.3`, then `P(X= 0)` is equal to

A

0.1

B

0.2

C

0.3

D

0.4

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • A random variable X takes the value 1,2,3 and 4 such that 2P(X=1)=3P(X=2)=P(X=3)=5P(X=4) . If sigma^(2) is the variance and mu is the mean of X then sigma^(2)+mu^(2)=

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  • A random variable X takes the values 0,1,2,3,..., with prbability PX(=x)=k(x+1)((1)/(5))^x , where k is a constant, then P(X=0) is.

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    `(7)/(25)`
    B
    `(16)/(25)`
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