The owner of a car wash wants to see if the arrival rate of cars follows a Poisson distribution. In order to test the assumption of a Poisson distribution, a random sample of 150 ten-minute intervals was taken. You are given the following observed frequencies:
|
Number of Cars Arriving in a 10-Minute Interval
|
Frequency
|
|
0
|
3
|
|
1
|
10
|
|
2
|
15
|
|
3
|
23
|
|
4
|
30
|
|
5
|
24
|
|
6
|
20
|
|
7
|
13
|
|
8
|
8
|
|
9
|
4
|
|
Total
|
150
|
The conclusion of the test is that the
A. arrival of cars follows a Poisson distribution
B. arrival of cars does not follow a Poisson distribution
C. test is inconclusive
D. None of these alternatives is correct.