QUESTION 5

The table below gives the distribution of the number of projects Z approved per year. The listing in this table is collectively exhaustive because all the possible outcomes are included, thus, the probabilities sum to 1.

Projects per year (Z)	P(Z)
1	0.15
2	0.06
3	0.10
4	0.04
5	0.20
6	0.25
7	0.10
8	0.10

The expected value, the variance and standard deviation of Z are:

	A.	E(Z)=4.73 , = 3.29774, and =1.81596
	B.	E(Z)=4.73 , = 3.00943, and =1.73477
	C.	E(Z)=4.73 , = 3.64944, and =1.91035
	D.	E(Z)=4.73 , = 3.57900, and =1.89182