Probability and poisson distribution

Reference no: EM1314432

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 expected frequency of exactly 3 cars arriving in a 10-minute interval is:

A. 0.1533
B. 0.1743
C. 23
D. 26.145

Reference no: EM1314432

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