SCENARIO 10-3
as Part of an Evaluation Program, a Sporting

question 285

Short Answer

SCENARIO 10-3
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. $\begin{array}{lllll}\text { Trial}&\text { Barth}&\text { Tornado}&\text { Reiser}&\text { Shaw }\\1 & 43 & 37 & 41 & 43 \\2 & 46 & 38 & 45 & 45 \\3 & 43 & 39 & 42 & 46\end{array}$
-Referring to SCENARIO 10-3, 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) $H _ { 0 } : \pi _ { A } = \pi _ { B } = \pi _ { C } = \pi _ { D }$

---

Definitions:

Observations

The act of noticing and describing events or processes in a systematic and objective manner, often used in scientific studies and research.

Researcher

An individual who conducts scientific studies to gain new knowledge and understanding on specific topics.

Behaviorism

A psychological approach that emphasizes the study of observable behaviors and the effects of learning and conditioning.

Attachment Styles

Patterns of expectations, needs, and emotions one exhibits in interpersonal relationships, influenced by early interactions with caregivers.