A Catalogue Company That Receives the Majority of Its Orders

question 157

Multiple Choice

A catalogue 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 time was found to be a random variable best approximated by an exponential distribution with a mean equal to 3 minutes.
-What proportion of customers having to hold more than 1.5 minutes will hang up before placing an order?

• A) 0.60653
• B) 0.13534
• C) 0.39347
• D) 0.86466

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Definitions:

Proximate Causes

Direct, immediate reasons behind an occurrence or behavior, distinguishing from deeper, underlying reasons.

Ultimate Causes

Fundamental reasons for behaviors or phenomena, often examined in evolutionary biology to understand why certain traits or behaviors have evolved.

Natural

Pertaining to phenomena, elements, or processes that occur in the natural world without human intervention.

Specific

Distinctively characterized by precise and distinct details or features.