Exhibit 12-6
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:
-Refer to Exhibit 12-6. 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

Question

Exhibit 12-6
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: 
-Refer to Exhibit 12-6. 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

Quizplus · Accepted Answer

The Answer of Exhibit 12-6
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: 
-Refer to Exhibit 12-6. 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

Exhibit 12-6 The Owner of a Car Wash Wants to See If