Manufacturing and Product Development
The slate in a pool table may be one piece, but because it is prone to fracturing during transporting, it is often split into three slabs. Slate slabs from three pool-table manufacturers were randomly selected. The weight of each slab (in kg) was recorded, and the summary statistics are given in the following table.
Assume the underlying weight populations are continuous. Use the Kruskal-Wallis test with a 5 0.05 to determine whether there is any evidence to suggest that at least two slate weight populations are different.