Given the following discrete probability distribution, x P (x) 500.375 650.15 700.225 750.05 900.20 a. Calculate the

Question:

Given the following discrete probability distribution,
x P (x)
50……………………0.375
65……………………0.15
70……………………0.225
75……………………0.05
90……………………0.20
a. Calculate the expected value of x.
b. Calculate the variance of x.
c. Calculate the standard deviation of x.