Instruction 11-6
as Part of an Evaluation Program,a Sporting Goods

question 106

Short Answer

Instruction 11-6
As part of an evaluation program,a sporting goods retailer wanted to compare the downhill coasting speeds of four brands of bicycles.She recorded three trials of each brand and determined their maximum downhill speeds.The results are presented in kilometres per hour in the table below.
$\begin{array}{lcccc}\text { Trial } & \frac{\text { Barth }}{} & \frac{\text { Tomado }}{} & \frac{\text { Reiser }}{} & \frac{\text { Shaw }}{} \\1 & 43 & 37 & 41 & 43 \\2 & 46 & 38 & 45 & 45 \\3 & 43 & 39 & 42 & 46\end{array}$
-Referring to Instruction 11-6,using an overall level of significance of 0.05,the critical range for the Tukey-Kramer procedure is ________.

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Definitions:

Independent Variable

A variable that is manipulated or changed to observe its effect on a dependent variable.

Sample Correlation Coefficient

A measure that indicates the extent to which two variables change together in a sample.

Dependent Variable

A variable in an experiment or model that is expected to change in response to manipulations of the independent variable(s).

Independent Variable

A variable in an experiment or study that is manipulated or changed by the researcher to observe its effect on the dependent variable.