Exhibit 9-2

Exhibit 9-2.The owner of a large car dealership believes that the financial crisis decreased the number of customers visiting her dealership.The dealership has historically had 800 customers per day.The owner takes a sample of 100 days and finds the average number of customers visiting the dealership per day was 750.Assume that the population standard deviation is 350. Refer to Exhibit 9-2.At the 5% significance level,the decision is to ___________.

A) Reject H₀;we can conclude that the mean number of customers visiting the dealership is significantly less than 800
B) Reject H₀;we cannot conclude that the mean number of customers visiting the dealership is significantly less than 800
C) Do not reject H₀;we can conclude that the mean number of customers visiting the dealership is significantly less than 800
D) Do not reject H₀;we cannot conclude that the mean number of customers visiting the dealership is significantly less than 800