A random variable may be _____________?
A. fixed
B. continuous
C. discrete
D. discrete or continuous
RANDOM VARIABLE AND PROBABILITY DISTRIBUTIONS
If E(x) is the expected value of X then E[x – E(x)]= ___________________?
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?
Discrete random variable is real valued function defined on a ___________ sample space?
A. Discrete
B. Variable
C. Scale
D. Non of these