Below are bacteria count for three different hand-washing methods;alcohol spray,antibacterial soap,and regular soap.Conduct a Kruskal-Wallis test to determine if there are differences between the three methods in terms of their bacteria count.Use a 0.05 level of significance.

Question

Quizplus · Accepted Answer

The Answer is H₀: The distributions of bacteria count are identical for all four methods.H_A: At least two of the distributions differ from one another.
T₁= 22.5,T₂ = 80.5,T₃ = 68
Test statistic: H = 10.9,P-value = 0.0043
Reject the null hypothesis.There is sufficient evidence to suggest at least two of the hand-washing methods differ in terms of their distribution of bacteria count.

Below Are Bacteria Count for Three Different Hand-Washing Methods;alcohol Spray,antibacterial