A Company That Receives Most of Its Orders by Telephone

question 164

Multiple Choice

A company that receives most 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 variable best approximated by an exponential distribution with a mean length of waiting time equal to 2.8 minutes .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:

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