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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
23
4
30
5
24
6
20
7
13
8
9
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.
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