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

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. $$\begin{array} { l l l l l l l } \text { Brand X16.4 } & 17.6 & 18.3 & 17.0 & 17.1 & 17.3 & \\\hline \text { Brand Y17.9 } & 18.0 & 17.8 & 18.4 & 17.6 & 19.0 & 19.1 \\\hline \text { Brand Z17.3 } & 16.4 & 16.5 & 16.0 & 15.8 & 16.3 & 17.1\end{array}$$