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NextQ5

Mean and variance of a discrete probability distribution are 3 and 7 respectively. What will be $E\left(X^{2}\right)$ for this distribution ?

Discrete Probability DistributionStudy Simplify Special1MCQ
Question 4

A random variable XX assumes the values −2,0-2, 0 and 22 only with respective probabilities 15,35\frac{1}{5}, \frac{3}{5} and KK. If 0 < K < 1, what will be the value of KK ?

4/35
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