Instruction 11-3
a Realtor Wants to Compare the Average Sales-To-Appraisal

question 22

Multiple Choice

Instruction 11-3
A realtor wants to compare the average sales-to-appraisal ratios of residential properties sold in four neighbourhoods (A,B,C,and D) .Four properties are randomly selected from each neighbourhood 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 summarised in the following table:
$\begin{array}{llclcl}\text { Source } & \text { df } & \text { SS } & \text { MS } & \text { F } & \text { PR }>\text { F } \\\hline \text { Neighbourhoods } && 3.1819 & 1.0606 & 10.76 & 0.001 \\\text { Error } & 12 & & & &\\total&&4.3644\end{array}$
-Referring to Instruction 11-3,

• A)at the 0.05 level of significance,the mean ratios for the 4 neighbourhoods are not all the same.
• B)at the 0.01 level of significance,the mean ratios for the 4 neighbourhoods are all the same.
• C)at the 0.05 level of significance,the mean ratios for the 4 neighbourhoods are not significantly different from 0.
• D)at the 0.10 level of significance,the mean ratios for the 4 neighbourhoods are not significantly different.

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