The Kruskal-Wallis Test Is to Be Used to Determine Whether

question 18

Multiple Choice

The Kruskal-Wallis test is to be used to determine whether there is a significant difference in the satisfaction rating (alpha = 0.05) between three brands of boxed cake mix.Shoppers were asked to rate their satisfaction on various attributes and an aggregate satisfaction score ranging from 1-50 was computed.The following data were obtained: $$\begin{array} { c c c c c c } \text { Cake Mix A } & 19 & 21 & 25 & 22 & 33 \\\text { Cake Mix B } & 30 & 24 & 28 & 31 & 35 \\\text { Cake Mix C } & 39 & 32 & 41 & 42 & 27\end{array}$$ For this test, how many degrees of freedom should be used?

• A)3
• B)2
• C)4
• D)8
• E)1

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Definitions:

Hypodermis

A layer of tissue directly beneath the skin, consisting of fat and connective tissues that insulate and protect the body.

UV Rays

Ultraviolet radiation, a type of energy emitted by the sun that can be harmful to skin.

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The biological process by which the skin, eyes, and hair gain their color, involving the production of the pigment melanin by melanocytes.

Cancer Risk

The probability of developing cancer, influenced by genetic, environmental, and lifestyle factors.