Answer
$H=13.06$ with a P-value $=0.001\ltα$. Reject the null hypothesis.
There is enough evidence to conclude that the distributions of the exam scores are not the same.
Work Step by Step
$H_0:$ the distributions of the exam scores are the same.
versus
$H_1:$ the distributions of the exam scores are not the same.
In MINITAB, enter the given data (see the picture). 1 corresponds to Canada, 2 corresponds to Denmark, and 3 corresponds to United States.
Select Stat -> Nonparametrics -> Kruskal–Wallis
Enter C2 in Response and C1 in Factor
Click OK.
