The number of bad checks received per day by a store and the respective probabilities are shown below.
Number of Bad Checks
Received Per Day
Probability
0
0.04
1
0.06
2
0.10
3
0.30
4
0.20
5
0.15
6
0.10
7
0.05
?
a.
What is the expected number of bad checks received per day?b.
Determine the variance in the number of bad checks received per day.c.What is the standard deviation?
What will be an ideal response?
| a. | 3.66 |
| b. | 2.7644 |
| c. | 1.6626 |
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