Two Hundred People Were Asked If They Had Read a Book

question 130

Multiple Choice

Two hundred people were asked if they had read a book in the last month. The accompanying contingency table, cross-classified by age, is produced. The probability that a respondent read a book in the last month and is at least 30 years old is the closest to ________.

• A) 0.12.
• B) 0.33.
• C) 0.46.
• D) 0.88.

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Definitions:

Net Operating Income

A company's revenue minus operating expenses, not including taxes and interest.

Sales Volume

The quantity of units sold within a specified period, crucial for analyzing a company's performance and planning production.

Variable Cost

Costs that vary directly with the level of production or sales volume, such as materials and labor directly involved in creating a product.

Advertising Spending

The amount of money a company uses for its advertising efforts to promote its products or services.