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RANDOM VARIABLE AND PROBABILITY DISTRIBUTIONS

A random variable may be _____________?

A random variable may be _____________?

A. fixed
B. continuous
C. discrete
D. discrete or continuous

If E(x) is the expected value of X then E[x – E(x)]= ___________________?

A. E(x) – E(x)
B. E(X) – 0
C. 0
D. E(x) + E(x)

Discrete random variable is real valued function defined on a ___________ sample space?

A. Discrete
B. Variable
C. Scale
D. Non of these

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