25. Paul Hunt is considering two business ventures. The anticipated returns (in thousands of dollars) of each venture are described by the following probability distributions.

Venture A

Earnings	Probability
20	0.3
40	0.4
50	0.3

Venture B

Earnings	Probability
5	0.3
20	0.4
40	0.3

(a) Compute the mean and variance for Venture A.

mean	dollars
variance	dollars2

Compute the mean and variance for Venture B.

mean	dollars
variance	dollars2