Fading of Wood Is a Problem with Wooden Decks on Boats

question 35

Essay

Fading of wood is a problem with wooden decks on boats. Three varnishes used to retard this aging process were tested to see whether there were any differences among them. Samples of 10 different types of wood were treated with each of the three varnishes and the amount of fading was measured after three months of exposure to the sun. The data are listed below. Is there evidence of a difference in the probability distributions of the amounts of fading among the three types of varnish? Use α = .05. $$\begin{array} { c c c c } &{ \quad\text { Varnish } } \\\hline \text { Sample } & 1 & 2 & 3 \\\hline 1 & 5.4 & 5 & 5.7 \\2 & 8 & 7.2 & 7.8 \\3 & 4.2 & 4.3 & 4.2 \\4 & 7 & 6.1 & 6.7 \\5 & 9.2 & 7.6 & 8.6 \\6 & 6.4 & 5.6 & 6.5 \\7 & 4.5 & 4.5 & 4.9 \\8 & 6.9 & 7 & 7.2 \\9 & 5.7 & 4.9 & 5 \\10 & 6 & 5.8 & 5.9 \\\hline\end{array}$$

Understand the conditions under which social facilitation occurs and its implications for group work and study practices.

Understand the concept of social loafing and its determinants.

Comprehend the conditions under which social facilitation and loafing occur.

Identify and describe Steiner's typology of tasks.

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Definitions:

Ultraviolet Radiation

A form of electromagnetic radiation with a wavelength shorter than that of visible light but longer than X-rays, capable of producing a sunburn.

Innate Human Characteristic

Fundamental traits or qualities that are considered to be inherent in all humans from birth.

Impulse to Play

An innate tendency to engage in activities for enjoyment and recreation rather than for a serious or practical purpose.

Consistency

The quality of always acting or behaving in the same way, showing the same standards or principles.