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 Arrivingin a 10-Minute Interval
Frequency
0
3
1
10
2
15
3
23
4
30
5
24
6
20
7
13
8
8
9 or more
4
150
The p-value is
A. greater than .1.
B. between .05 and .1.
C. between .025 and .05.
D. less than .01.
Answer: A
Business
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