Perform a Kruskal-Wallis Test Using the Critical-Value Approach

question 9

Essay

Perform a Kruskal-Wallis test using the critical-value approach.
-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, do the data provide sufficient evidence to conclude that a difference exists between the mean burn times of the three different brands? Use the Kruskal-Wallis test. $$\begin{array} { l l l l l l l l } \text { Brand X } & 16.4 & 17.6 & 18.3 & 17.0 & 17.1 & 17.3 & \\ \hline \text { Brand Y } & 17.9 & 18.0 & 17.8 & 18.4 & 17.6 & 19.0 & 19.1 \\ \hline \text { Brand Z } & 17.3 & 16.4 & 16.5 & 16.0 & 15.8 & 16.3 & 17.1 \end{array}$$

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