Entertainment Software Association Would Like to Test If the Average

question 72

Multiple Choice

Entertainment Software Association would like to test if the average age of "gamers" (those that routinely play video games) is more than 30 years old. A random sample of 33 gamers was selected and their ages were recorded. Assume that the standard deviation for the population of the age of gamers is 4.7 years and the true population mean for the age of gamers is 31.2 years. Using α = 0.02, beta equals ______.

• A)0.7224
• B)0.0434
• C)0.2918
• D)0.1247

---

Definitions:

Net Operating Income

This represents the total profit of a company after subtracting operating expenses, excluding taxes and interest.

Variable Costing

An accounting method that considers only variable costs as product costs, with fixed costs treated as period costs.

Net Operating Income

A measure of a company's profitability, calculated by subtracting operating expenses from operating revenue.

Variable Costing

An accounting method that only allocates variable costs to inventory, treating fixed costs as period expenses that are charged to the income statement in the period they are incurred.