1. One characteristic of billiard balls is their elasticity - the bounce they get when striking one another. A manufacturer of billiard balls is testing three additives to the basic plastic. The elasticity scores for the batches are below.
The sum of the ranks for additive 1 is
A. 143.5.
B. 253.5.
C. 142.
2. One characteristic of billiard balls is their elasticity - the bounce they get when striking one another. A manufacturer of billiard balls is testing three additives to the basic plastic. The elasticity scores for the batches are below.
The Kruskal-Wallis test statistic is
A. 114.26.
B. 22.46.
C. 23.85.