At the 0025 Significance Level, Test the Claim That the Four Brands

question 6

Essay

At the 0.025 significance level, test the claim that the four brands have the same mean if the following sample results have been obtained.
$\begin{array} { l } \text { Brand A}&\text { Brand B}&\text { Brand C }&\text { Brand D }\\\hline17&18&21&22\\20&18&24&25\\21&23&25&27\\22&25&26&29\\21&26&29&35\\&&29&36\\&&&37\end{array}$

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