AP EAMCET · Maths · Probability
Suppose \(X\) has the following probability mass function \(P(X=0)=0.2, P(X=1)=0.5\), \(P(X=2)=0.3\). What \(E\left[X^2\right]=\) ?
- A 2.89
- B 1.7
- C 1.1
- D 1.21
Answer & Solution
Correct Answer
(B) 1.7
Step-by-step Solution
Detailed explanation
Given probability distribution is \(\begin{array}{c|c|c|c} \hline X & 0 & 1 & 2 \\ \hline P(X) & 0.2 & 0.5 & 0.3 \\ \hline \end{array}\)…
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