Need help with these...
An unemployment office in a small town has developed the following probability
distribution for the number of new unemployment claims processed per week.
Number of
New Claims
4
5
6
7
8
9
10
Probability
.05
.10
.15
.20
.20
.20
.10
(a) What is the expected number of new unemployment claimsprocessed per week?
(b) What is the variance in the number of new unemployment claims processed per week?
(c) What is the standard deviation in the number of new unemployment claims processed per week?