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

question 189

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 t critical value they would use is ________.

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Definitions:

Taking Minutes

The process of recording the main points and decisions of a meeting in a formal written format.

Objective Account

An objective account is a neutral description of events or facts without the influence of personal feelings or interpretations.

Formal

Following established conventions or rules, often characterized by a structured and official tone.

Techniques of Professional Talking

Methods and practices for communicating effectively in professional settings, including clarity, diplomacy, and purposefulness.