In problem 3-69, suppose that the company makes $1,200 on each order but has to pay a fixed weekly cost of $1,750. Find the expected weekly profit and the standard deviation of weekly profits.
x ...... P(x)
0 ....... 0.10
1 ....... 0.20
2 ....... 0.30
3 ....... 0.15
4 ....... 0.15
5 ....... 0.05
6 ....... 0.05