Statistics II20755 marksNumerical: Kruskal Wallis testKruskal Wallis test
Kruskal-Wallis H Test for Catalyst Comparison A chemist uses three catalysts for distilling alcohol and the results were tabulated below. Are there any significant differences between catalysts? Test at 5% level of significance. Use Kruskal-Wallis H test. | Catalyst | Alcohol (in cc) | | | | | |----
Kruskal-Wallis H Test for Catalyst Comparison
A chemist uses three catalysts for distilling alcohol and the results were tabulated below. Are there any significant differences between catalysts? Test at 5% level of significance. Use Kruskal-Wallis H test.
| Catalyst | Alcohol (in cc) | ||||
|---|---|---|---|---|---|
| C1 | 380 | 430 | 410 | ||
| C2 | 290 | 350 | 270 | 250 | 270 |
| C3 | 400 | 380 | 450 |
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Catalyst Alcohol yield (cc) Sample size ------------------------------------------- C1 380, 430, 410 $n1 = 3$ C2 290, 350, 270, 250, 270 $n2 = 5$ C3 400, 380, 450 $n3 = 3$ Total: $N = 3 + 5 + 3 = 11$, significance level $\alpha = 0.05$. - $H0$: There is no significant difference between the three...