A Catalog Company That Receives the Majority of Its Orders

question 104

Multiple Choice

A catalog company that receives the majority of its orders by telephone conducted a study to determine how long customers were willing to wait on hold before ordering a product. The length of waiting time was found to be a random variable best approximated by an exponential distribution with a mean length of waiting time equal to 2.8 minutes (i.e. the mean number of calls answered in a minute is 1/2.8) . What proportion of callers is put on hold longer than 2.8 minutes?

• A) 0.3679
• B) 0.50
• C) 0.60810
• D) 0.6321

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Definitions:

Loyal

The quality of being faithful or devoted to a person, country, group, or cause.

Stockholders

Individuals or entities that own shares of stock in a corporation, making them partial owners of the company.

Marginal Efficiency

The rate of return on an investment that is additional or marginal to the current level of investment.

Capital

Assets or resources, such as machinery, buildings, or money, that can be used to produce goods and services and generate wealth.