Exhibit 9-2

question 77

Multiple Choice

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.The population parameter to be tested is ___________.

• A)The average number of 750 customers per day
• B)The proportion of customers visiting the dealership per day
• C)The mean number of customers visiting the dealership per day
• D)The standard deviation of the number of customers visiting the dealership per day