Two Percent of the Customers of a Store Buy Cigars

question 136

Multiple Choice

Two percent of the customers of a store buy cigars. Half of the customers who buy cigars buy beer. 25 percent who buy beer buy cigars. Determine the probability that a customer neither buys beer nor buys cigars.

• A) 0.98
• B) 0.95
• C) 0.75
• D) 0.96
• E) 0.50

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Definitions:

Elaboration Techniques

Strategies used to add detail or expand on a point or idea, often used in teaching and learning to deepen understanding.

Covariance

A measure of the joint variability of two random variables, giving insight into how the variables change together.

Coefficient Of Correlation

A numerical measure that indicates the strength and direction of a linear relationship between two variables, ranging from -1 to 1.

Linear Relationship

A type of correlation where the change in one variable is directly proportional to the change in another variable.