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. Based on this, how many traffic accidents should be expected during a week long period?
A) 15.33
B) 10.95
C) approximately 10.36
D) approximately 12.21
E) none of these

Question

Quizplus · Accepted Answer

The expected number of traffic accidents per day is 2.19. Over a week (7 days), the expected number would be 2.19 * 7 = 15.33.

The Number of Traffic Accidents Per Day on a Certain