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The Number of Traffic Accidents Per Day on a Certain

Question 8

Multiple Choice

The number of traffic accidents per day on a certain section of highway is thought to be Poisson distributed with a mean equal 2.19. Then the standard deviation of number of accidents is:


A) 2.19
B) approximately 4.80
C) approximately 1.48
D) 3.14
E) (2.19) 2

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