TABLE 10-4
a Real Estate Company Is Interested in Testing

question 167

Multiple Choice

TABLE 10-4
A real estate company is interested in testing whether, on average, families in Gotham have been living in their current homes for less time than families in Metropolis have. Assume that the two population variances are equal. A random sample of 100 families from Gotham and a random sample of 150 families in Metropolis yield the following data on length of residence in current homes.
$$\text { Gotham: } \bar{X} _ { G } = 35 \text { months, } s _G ^ { 2 } = 900 \quad \text { Metropolis: } \bar{X} _ { M } = 50 \text { months, } \mathrm { sm } ^ { 2 } = 1050$$
-Referring to Table 10-4, what is(are) the critical value(s) of the relevant hypothesis test if the level of significance is 0.05?

• A) t ? Z = - 2.080
• B) t ? Z = - 1.96
• C) t ? Z = - 1.645
• D) t ? Z = ±1.96

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Definitions:

FTP

File Transfer Protocol, a standard network protocol used for the transfer of computer files between a client and server on a computer network.

Malfunction Indicator Light

A warning light on a vehicle's dashboard designed to alert the driver of a malfunction in the engine or emission control system.

Emissions

The output of gases or particles released into the environment from an engine or other machinery, often subject to regulations to limit pollution.

Federal Test Parameter

Specific criteria or conditions outlined by federal regulations that are used for conducting tests, usually related to environmental, safety, or performance standards.