TABLE 10-17 a Realtor Wants to Compare the Mean Sales-To-Appraisal Ratios of Ratios

Multiple Choice

TABLE 10-17
A realtor wants to compare the mean sales-to-appraisal ratios of residential properties sold in four neighborhoods (A, B, C, and D) . Four properties are randomly selected from each neighborhood and the ratios recorded for each, as shown below.
A: 1.2, 1.1, 0.9, 0.4 C: 1.0, 1.5, 1.1, 1.3
B: 2.5, 2.1, 1.9, 1.6 D: 0.8, 1.3, 1.1, 0.7
Interpret the results of the analysis summarized in the following table:

-Referring to Table 10-17, the numerator and denominator degrees of freedom for Levene's test for homogeneity of variances at a 5% level of significance are, respectively,

A) 3, 12.
B) 12, 3.
C) 3, 15.
D) 15, 3.