SOLUTION: Struggling with expectation, can you help?
The number of failures of a computer system in a week of operation has the following pmf:
No of failures
0
1
2
3
4
5
6
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Question 316278: Struggling with expectation, can you help?
The number of failures of a computer system in a week of operation has the following pmf:
No of failures
0
1
2
3
4
5
6
Probability
0.18
0.28
0.25
0.18
0.06
0.04
0.01
(a) Find the expected number of failures in a week.
(b) Find the variance of the number of failures in a week.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
.
.
.
where
is the average x value.
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