Exhibit 9-9
the Sales of a Grocery Store Had an Average

question 77

Multiple Choice

Exhibit 9-9
The sales of a grocery store had an average of $8,000 per day. The store introduced several advertising campaigns in order to increase sales. To determine whether or not the advertising campaigns have been effective in increasing sales, a sample of 64 days of sales was selected. It was found that the average was $8,300 per day. From past information, it is known that the standard deviation of the population is $1,200.
-Refer to Exhibit 9-9. The correct null hypothesis for this problem is

• A)\(\mu\) < 8000
• B)\(\mu\) > 8000
• C)\(\mu\) = 8000
• D)\(\mu\)> 8250

---

Definitions:

Subscription Revenue

Income earned by a company through the sale of subscriptions for services or products, often recognized over the subscription period.

Trade Magazine Subscription

The cost incurred by a business for subscribing to a publication that targets a specific industry or professional field.

Accumulated Depreciation

The total amount of depreciation expense that has been recorded for an asset since it was placed in service.

Liability Accounts

Accounts on the balance sheet that represent obligations of the company, including loans, accounts payable, mortgages, and accrued expenses.