Chapter 4, Problem 11CRE

a.

To determine

To discuss: An experiment that uses a completely randomized design.

Explanation of Solution

Given:

Number of students are 30.

Number of treatments are two, that is, easy and difficult maze.

Assign the number between 1 to 30 to students. Assign easy maze to 15 students and hard mazes to rest of the 15 students. Then compare the result of the two treatment groups.

b.

To determine

To discuss: The matched pair experimental design using the 30 students.

Explanation of Solution

Make 15 slips and write easy maze on all the 15 slips. Similarly, make other 15 slips and write hard maze on the 15 slips. Now shuffle all the slips and ask the students to choose the slips, the students. Now compare their timings.

c.

To determine

To find: The design that is more likely to detect the difference.

Explanation of Solution

The matched pair is expected to detect the difference because it is controlling the differences that exist among the 30 subjects.