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In: Statistics and Probability

The owner of a car wash wants to see if the arrival rate of cars follows...

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 or more 4
150


The calculated value for the test statistic equals

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orchestra answered 2 years ago
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