Roth is a computer-consulting firm. The number of new clients that they have obtained each month has ranged from 0 to 6. The number of new clients has the probability distribution that is shown below.
Number of
New Clients
Probability
0
0.05
1
0.10
2
0.15
3
0.30
4
0.25
5
0.10
6
0.05
?
The variance is
A. 1.45.
B. 2.09.
C. 3.1.
D. 9.61.
Answer: B
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