For a random variable X, E(X) = 4 and $E - CUETMOCK

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Target Exam

CUET

Subject

-- Mathematics - Section B2

Chapter

Probability Distributions

Question:

For a random variable X, E(X) = 4 and $E(X^2)=20.$ Then variance of X is

Options:

16

2

4

1

Correct Answer:

4

CUET Questions