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 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 
) .What proportion of callers is put on hold longer than 2.8 minutes?
Definitions:
Canadian Dollar
The official currency of Canada, represented by CAD or C$, and divided into 100 cents.
Exchange Rate
The price at which one currency can be exchanged for another currency in the foreign exchange market.
US Dollars
The currency issued by the United States, functioning as its primary medium of exchange and a global reserve currency.
Tourism
The activity of traveling to and staying in places outside one's usual environment for leisure, business, or other purposes.
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