TABLE 11-3
a Realtor Wants to Compare the Average Sales-To-Appraisal $\quad 1.2,1.1,0.9,0.4 \quad$

Multiple Choice

TABLE 11-3
A realtor wants to compare the average 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: $\quad 1.2,1.1,0.9,0.4 \quad$ C: $\quad 1.0,1.5,1.1,1.3$
B: $\quad 2.5,2.1,1.9,1.6 \quad$ D: $\quad 0.8,1.3,1.1,0.7$

Interpret the results of the analysis summarized in the following table:
$\begin{array}{llllll}\text { Source } & \text { df } & \text { SS } & \text { MS } & \text { F } & \text { PR }>\text { F } \\\text { Neighborhoods } & & 3.1819& 1.0606 & 10.76 & 0.001 & & \\\text { Error } & 12 & & & & \\\text { Total } & & 4.3644 & &\end{array}$

-Referring to Table 11-3, what is the null hypothesis for Levene's test for homogeneity of variances?

A) $H_{0}: \pi_{A}=\pi_{B}=\pi_{C}=\pi_{D}$

B) H₀ : M_A = M_B = M_C = M_D

C) $H_{0}: \sigma_{A}^{2}=\sigma_{B}^{2}=\sigma_{C}^{2}=\sigma_{D}^{2}$

D) H₀ : µ_A = µ_B = µ_C = µ_D