A consultant has three sources of incomefrom teaching short courses, from selling computer software, and from advising on projects. His expected annual incomes from these sources are $20,000, $36,000,

and $12,000, and the respective standard deviations are $2,000, $6,000, and $4,000.

Assuming independence, find the mean and standard deviation of his total annual income.

W=______

(Round to the nearest dollar as needed.)

W=$____

(Round to the nearest dollar as needed.)