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Question
The number of electrical outages in a city varies from day to day. Assume that the number of electrical outages (x) in the city has the following probability distribution.| x | f(x) |
| 0 | 0.80 |
| 1 | 0.15 |
| 2 | 0.04 |
| 3 | 0.01 |
The mean and the standard deviation for the number of electrical outages (respectively) are
a. 2.6 and 5.77
b. 0.26 and 0.577
c. 3 and 0.01
d. 0 and 0.8
Answer
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