SCENARIO 10-3
a Real Estate Company Is Interested in Testing $\cong$

question 193

Multiple Choice

SCENARIO 10-3
A real estate company is interested in testing whether the mean time that families in Gotham have been living in their current homes is less than families in Metropolis.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: x̄ _G = 35 months,S_G ² = 900 Metropolis: x̄ _M = 50 months,S _M² = 1050
-Referring to Scenario 10-3,what is(are) the critical value(s) of the relevant hypothesis test if the level of significance is 0.01?

• A)t \(\cong\) Z = - 1.96
• B)t \(\cong\) Z = \(\pm\)1.96
• C)t \(\cong\) Z = - 2.080
• D)t \(\cong\) Z = - 2.33

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Definitions:

Melena

The passage of black, tarry stools, indicative of gastrointestinal bleeding.

GI Series

A series of diagnostic tests that produce images of the gastrointestinal tract to detect abnormalities or diseases.

Barium

A chemical element with the symbol Ba, number 56 on the periodic table, used primarily in X-ray imaging to improve the contrast of the images.

Melena

The occurrence of dark, sticky feces, signaling bleeding within the gastrointestinal tract.