Suppose that the random variable x is equal to the number

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Suppose that the random variable X is equal to the number of hits obtained by a certain baseball player in this next 3 at bats.

If P(X =1) = 0.3, P(X = 2) = 0.2, and P(X = 0) = 3P(X = 3).

Find:

1. the pmf of X.

2. the expectation of X.

3. the variance of X.

4. the standard devaition of X.

Reference no: EM13604681

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