TABLE 12-18
as Part of an Evaluation Program, a Sporting

question 11

Essay

TABLE 12-18
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.
$$\begin{array} { l l l l l } \text { Trial } & \text { Barth } & \text { Tornado } & \text { Reiser } & \text { Shaw } \\1 & 43 & 37 & 41 & 43 \\2 & 46 & 38 & 45 & 45 \\3 & 43 & 39 & 42 & 46\end{array}$$
-Referring to Table 12-18, the sporting goods retailer decided to perform a Kruskal-Wallis test. The null hypothesis of the test is ______.

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Definitions:

Cl

Symbol for Chlorine, a reactive, yellow-green gas at room temperature, belonging to the halogen group in the periodic table, with applications in water purification, disinfectants, and bleach.

Elemental Metals

A group of elements that share properties such as high electrical conductivity, malleability, and a shiny appearance.

Redox Reaction

A type of chemical reaction that involves a transfer of electrons between two species.

Oxidation Number

A figure indicating the number of electrons lost or gained by an atom in a compound or ion.