An Ad Agency Is Developing a Campaign to Promote a Business

question 40

Multiple Choice

An ad agency is developing a campaign to promote a business opening in a new mall development. To develop an appropriate mailing list, they decide to purchase lists of credit card holders from MasterCard and American Express. Combining the lists, they find the following: 40 percent of the people on the list have only a MasterCard and 10 percent have only an American Express card. Another 20 percent hold both MasterCard and American Express. Finally, 30 percent of those on the list have neither card. Suppose a person on the list is known to have a MasterCard. What is the probability that person also has an American Express card?

• A) .20
• B) .33
• C) .18
• D) .70
• E) .90

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Definitions:

Carbon Dioxide

A colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in the air and absorbed by plants in photosynthesis.

Climate Change

The significant and lasting changes in the statistical distribution of weather patterns over periods ranging from decades to millions of years.

Intertropical Convergence Zone

The region near the equator where the northeast and southeast trade winds converge, often leading to thunderstorms and heavy precipitation.

Maximum Solar Radiation

Refers to the highest amount of solar energy received by a specific area over a period, affecting climate and weather patterns.