Chapter 4.5, Problem 173E

a.

To determine

Create a randomization sample by separating 20 data values into two random groups.

b.

To determine

Compute the sample mean of each group and calculate the difference ${\overline{x}}_c-{\overline{x}}_n$ in the simulated means.

c.

To determine

Create a rough sketch of the randomization distribution shown in Figure 4.17 and locate the randomization statistic obtained in Part (b) on the sketch.