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:

Post-Traumatic Stress Disorder

A mental health condition triggered by experiencing or witnessing a terrifying event, characterized by flashbacks, nightmares, severe anxiety, and uncontrollable thoughts about the event.

Signature Wound

A term often used to describe injuries that are characteristic or particularly prevalent among veterans of a specific conflict, such as traumatic brain injuries in the Iraq and Afghanistan wars.

Traumatic Brain Injury

Physical damage to the brain caused by an external force, leading to temporary or permanent impairment of cognitive, physical, and psychosocial functions.

Afghanistan And Iraq

Refers to the two countries in Asia and the Middle East, respectively, that have been the focus of significant military and political actions since the early 2000s.