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In: Statistics and Probability

An experiment is conducted to compare four different formulations (which we will call A, B, C...

An experiment is conducted to compare four different formulations (which we will call A, B, C and D) on the tensile strength of cement. The resulting values are given in the table below.

A B C D
28642864 28192819 29342934 29592959
26702670 29242924 30593059 31583158
27032703 29992999 31083108 32203220

Use the Kruskal-Wallis test to test for differences among the formulations.

To 4 decimal place accuracy, the value of the test statistic is

To 4 decimal place accuracy, the p-value is

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