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The probability mass function of a random X is zero except at the points X=0,1,2 .

written 4.4 years ago by | • modified 2.1 years ago |

The probability mass function of a random X is zero except at the points X=0,1,2 . At these points it has the values $P(0)=3c^3 ,P(1)=4c-10c^2 ,P(2)=5c-1$.

(i) find c

(ii) Find P(X<1) , P(1 < X ≤ 2) , P(0 < X ≤2)

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