A discrete random variable X has the following probability distribution: Value of X 1 2 3 4 5 6 Probability 0.30 0.20 0.15 0.15 0.10 0.10 Find the mean of the random variable X, μX. A) 4.15 B) 2.85 C)...

A discrete random variableX has the following probability distribution:

Find the mean of the random variable X, μX.
A) 4.15
B) 2.85
C) 3
D) 3.50

Find the variance of the random variableX, σ2X

A) 2.8275
B) 1.3125
C) 3.4135
D) 1.9225

Find the standard deviation of the random variable X, σX.
A) 1.44
B) 1.68
C) 1.21
D) 1.89