TABLE 10-4
a Real Estate Company Is Interested in Testing $\overline{X}$

question 120

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.
Gotham: $\overline{X}$ _G = 35 months, s_G² = 900 $\quad$ $\quad$ Metropolis: $\overline{X}$ _M = 50 months, s_M² = 1050
-Referring to Table 10-4, what is(are) the critical value(s) of the relevant hypothesis test if the level of significance is 0.01?

• A) t ? Z = ±1.96
• B) t ? Z = - 1.96
• C) t ? Z = - 2.080
• D) t ? Z = - 2.33

---

Definitions:

Landrum-Griffin Act

A U.S. law enacted in 1959, formally known as the Labor-Management Reporting and Disclosure Act, aimed at regulating labor unions' internal affairs and their officials' relationships with employers.

Union Democracy

The principles and practices ensuring democratic governance and decision-making within labor unions.

Theory Y

A management concept that assumes employees are self-motivated, enjoy work, and will seek and accept responsibility.

National Unions

Labor unions that operate across an entire country, representing a broad spectrum of workers from various industries and sectors.