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

question 161

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.
$\begin{array}{lll}\text { Broker } & \text { Clients } & \text { Sales } \\1 & 27 & 52 \\2 & 11 & 37 \\3 & 42 & 64 \\4 & 33 & 55 \\5 & 15 & 29 \\6 & 15 & 34 \\7 & 25 & 58 \\8 & 36 & 59 \\9 & 28 & 44 \\10 & 30 & 48 \\11 & 17 & 31 \\12 & 22 & 38\end{array}$

-Referring to Table 13-4, the managers of the brokerage firm wanted to test the hypothesis that the true slope was equal to 0. For a test with a level of significance of 0.01, the null hypothesis should be rejected if the value of the test statistic is ___________.

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Definitions:

Malleus

A small bone in the middle ear that transmits sound vibrations from the eardrum to the inner ear.

Presbycusis

Age-related hearing loss, gradually occurring as individuals get older.

External Acoustic Meatus

The external passage of the ear leading to the tympanic membrane, or eardrum.

Auditory Canal

The tube that runs from the outer ear to the middle ear, transmitting sound waves collected by the ear's auricle (outer part) to the tympanic membrane.