Exhibit 9-2

question 99

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.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

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Definitions:

Meningitis

The inflammation of the protective membranes covering the brain and spinal cord, potentially caused by infection.

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Thin layers of tissue that cover surfaces, line cavities, and separate spaces or organs within the body.

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A progressive neurological disorder characterized by movement problems such as tremors, stiffness, and slowed movement.

Antiparkinsonism Drugs

Medications designed to treat the symptoms of Parkinson's disease, helping to control movement issues and tremors.