SCENARIO 11-3
as Part of an Evaluation Program, a Sporting

SCENARIO 11-3
As part of an evaluation program, a sporting goods retailer wanted to compare the downhill coasting
speeds of 4 brands of bicycles. She took 3 of each brand and determined their maximum downhill
speeds. The results are presented in miles per hour in the table below. $$\begin{array} { ccccc} \underline{\text { Trial }} & \underline{\text { Barth } }& \underline{ \text { Tornado } }& \underline{\text { Reiser }} & \underline{ \text { Shaw }} \\1 & 43 & 37 & 41 &43 \\2 & 46 & 38 & 45 & 45 \\3 & 43 & 39 & 42 & 46\end{array}$$
-Referring to Scenario 11-3, the null hypothesis for Levene's test for homogeneity of variances is a) $H _ { 0 } : \mu _ { A } = \mu _ { B } = \mu _ { C } = \mu _ { D }$
b) $H _ { 0 } : M _ { A } = M _ { B } = M _ { C } = M _ { D }$
c) $H _ { 0 } : \sigma _ { A } ^ { 2 } = \sigma _ { B } ^ { 2 } = \sigma _ { C } ^ { 2 } = \sigma _ { D } ^ { 2 }$
d) $H _ { 0 } : \pi _ { A } = \pi _ { B } = \pi _ { C } = \pi _ { D }$

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