An Advertising Campaign Is Being Developed to Promote a New

question 40

Multiple Choice

An advertising campaign is being developed to promote a new bookstore opening in the newest mall development.To develop an appropriate mailing list it has been decided to purchase lists of credit card holders from MasterCard and American Express.Combining the lists they find the following: 40% of the people on the list have only a MasterCard and 10% have only an American Express card.Another 20% hold both MasterCard and American Express.Finally,30% 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:

Time Studying

The allocation of time towards educational activities with the aim of learning and understanding new information or skills.

Annual Income

The total amount of money earned by an individual or household in one year, from all sources.

Education Level

The highest degree or stage of education that an individual has completed.

Correlations

A measure showing the extent to which two or more variables fluctuate together.