Question

The following probability distribution has been assessed for the number of accidents that occur in a Midwestern city each day:


Accidents Probability
0 0.25
1 0.20
2 0.30
3 0.15
4 0.10

Based on this probability distribution, the standard deviation in the number of accidents per day is:

A) 2.0

B) 1.63

C) 2.65

D) 1.28

Answer

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