Answer
$H=5.24$ with a P-value $=0.073\gtα$. Do not reject the null hypothesis.
There is not enough evidence to conclude that the distributions of the stimulus are not the same.
Work Step by Step
$H_0:$ the distributions of the stimulus are the same.
versus
$H_1:$ the distributions of the stimulus are not the same.
In MINITAB, enter the given data (see the picture). 1 corresponds to Simple, 2 corresponds to Go/No-Go, and 3 corresponds to Choice.
Select Stat -> Nonparametrics -> Kruskal–Wallis
Enter C2 in Response and C1 in Factor
Click OK.
