TABLE 13-4
the Managers of a Brokerage Firm Are Interested

question 47

Short Answer

TABLE 13-4
The managers of a brokerage firm are interested in finding out if the number of new clients a broker brings into the firm affects the sales generated by the broker. They sample 12 brokers and determine the number of new clients they have enrolled in the last year and their sales amounts in thousands of dollars. These data are presented in the table that follows.
$\begin{array}{lll}\text { Broker } & \text { Cliente } & \text { Sales } \\1 & 27 & 52 \\2 & 11 & 37 \\3 & 42 & 64 \\4 & 33 & 55 \\5 & 15 & 29 \\6 & 15 & 34 \\7 & 25 & 58 \\8 & 36 & 59 \\9 & 28 & 44 \\10 & 30 & 48 \\11 & 17 & 31 \\12 & 22 & 38\end{array}$

-Referring to Table 13-4, suppose the managers of the brokerage firm want to obtain a 99% confidence interval estimate for the mean sales made by brokers who have brought into the firm 24 new clients. The confidence interval is from _____to ________.

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Definitions:

Mobility

The ability to move freely and easily, crucial for performing activities of daily living and enhancing quality of life.

Fecal Impaction

A condition where hard stool becomes stuck in the rectum or colon, making it difficult to have a bowel movement.

Valsalva Maneuver

A technique involving deep breath and then forcibly exhaling while keeping the mouth and nose closed, used in medicine to test heart function and in other applications.

Flatulence

The accumulation of gas in the digestive system leading to the release of gas through the anus.