Question

Please label and show each step

10. Four different paints are advertised to have the same drying times. Use the Kruskal Wallis Test – Analysis of Variance by Ranks, to verify the manufacturer’s claim. Remember that seven samples were tested for each of the paints. The time in minutes until the paint was dry enough for a second coat to be applied was recorded. Below are the results.   

Paint 1	Rank	Paint 2	Rank	Paint 3	Rank	Paint 4	Rank
114		112		126		115
117		118		127		117
120		118		128		122
121		118		129		123
126		120		131		123
126		121		131		126
130		121		137		126

H₀: the population distributions of drying times are the same for the four samples

H₁: the population distributions of drying times are not all the same for the four samples

1. State your test statistic:

2. State your decision rule: (α = 0.05)

3. Show your calculation:

4. What is your conclusion?

Answer 1