Instruction 12-4
the Managers of a Brokerage Firm Are Interested

question 151

Short Answer

Instruction 12-4
The managers of a brokerage firm are interested in finding out if the number of new customers a broker brings into the firm affects the sales generated by the broker.They sample 12 brokers and determine the number of new customers they have enrolled in the last year and their sales amounts in thousands of dollars.These data are presented in the table that follows.
$\begin{array}{ccc}\text {Broker }&\text { Clients}&\text { Sales}\\\hline1 & 27 & 52 \\2 & 11 & 37 \\3 & 42 & 64 \\4 & 33 & 55 \\5 & 15 & 29 \\6 & 15 & 34 \\7 & 25 & 58 \\8 & 36 & 59 \\9 & 28 & 44 \\10 & 30 & 48 \\11 & 17 & 31 \\12 & 22 & 38\end{array}$
-Referring to Instruction 12-4,suppose the managers of the brokerage firm want to obtain a 99% prediction interval for the sales made by a broker who has brought into the firm 18 new customers.The prediction interval is from ________ to ________.

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Definitions:

Electromagnetic Wave

Waves of the electromagnetic field, propagating through space, carrying electromagnetic radiant energy.

Plastic Explosives

A type of explosive material that is moldable or flexible, used in military and demolition applications.

Traditional Explosives

Substances that undergo a rapid chemical reaction producing gases at high temperature and pressure, used historically in military, mining, and construction.

Rubber

A flexible, elastic material obtained from the latex of certain plants or synthetically produced, used in making tires, gloves, and various other products.