A Fire-Science Specialist Tests Three Different Brands of Flares for Their

question 13

Essay

A fire-science specialist tests three different brands of flares for their burning times (in minutes)and the results are given below for the sample data. At the 0.05 significance level, test the claim that the three brands have the same mean burn time. Use the Kruskal-Wallis test. $$\begin{array} { l l l l l l l } \text { Brand X16.4 } & 17.6 & 18.3 & 17.0 & 17.1 & 17.3 & \\\hline \text { Brand Y17.9 } & 18.0 & 17.8 & 18.4 & 17.6 & 19.0 & 19.1 \\\hline \text { Brand Z17.3 } & 16.4 & 16.5 & 16.0 & 15.8 & 16.3 & 17.1\end{array}$$

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Definitions:

Napoleonic Wars

A series of major conflicts pitting the French Empire and its allies, led by Napoleon Bonaparte, against a fluctuating array of European powers.

Trading

The act of buying, selling, or exchanging goods, services, or financial instruments within domestic or international markets.

East India Company

A historic English company formed in 1600 for the exploitation of trade with East and Southeast Asia and India, operating with a monopoly on English trade in the East Indies.

Shipbuilding Technology

The development and application of methods, tools, and materials for constructing ships, improving efficiency, durability, and navigability.