TABLE 13-4
the Managers of a Brokerage Firm Are

question 122

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 intothe firm affects the sales generated by the broker. Theysample 12 brokersand determine the numberof new clients they have enrolled in the last year and their sales amountsin thousandsof dollars. These data are presented in the table that follows. $\begin{array}{lll}\text { Broker } & \text { Clients } & \text { Sales } \\1 & 27 & 52 \\2 & 11 & 37 \\3 & 42 & 64 \\4 & 33 & 55 \\5 & 15 & 29 \\6 & 15 & 34 \\7 & 25 & 58 \\8 & 36 & 59 \\9 & 28 & 44 \\10 & 30 & 48 \\11 & 17 & 31 \\12 & 22 & 38\end{array}$

-Referring to Table 13-3, suppose the director of cooperative education wants to obtain a 95% prediction interval estimate for the number of job offers received by people who have had exactly one cooperative education job. The prediction interval is from_____ to_____
.

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Definitions:

Data Set

A collection of data, often organized in a structured format, that can be analyzed to find patterns, trends, or to answer specific questions.

Extreme Values

The maximum and minimum values in a data set, often of particular interest for identifying outliers.

Bell Shaped

A term often used in statistics to describe the symmetrical, bell-like curve of a normal distribution.

Sensitive

Capable of detecting or responding to small changes, often used in the context of measurements, instruments, or systems.