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

Multiple Choice

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. At 95% confidence, 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.