# Statistics

posted by
**Aria**
.

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

If the standard deviation for a Poisson distribution is known to be 3.60, the expected value of that Poisson distribution is:

a. approximately 1.90

b. 3.60

c. 7.2

d. 8.28

e. 12.96