Chapter 6.2, Problem 6.40E

(a)

To determine

To outline a block design for this experiment.

Explanation of Solution

  $\begin{array}{l}\text{Given: 500 males and 300 females}\text{.}\\ \text{There are three therapies: Therapy 1,Therapy 2,Therapy 3}\text{.}\\ \end{array}$

The outline is as;

  

(b)

To determine

To describe the advantages of a block design of $800$ subjects and advantagesof a block design of $800$ male subjects.

Explanation of Solution

The advantages of a block design of $800$ subjects are:

1. More accurate results.
2. We are capable of measuring the effect of other variables on the progress of cancer.
3. Easy statistical analysis.

The advantages of a block design of $800$ male subjects:

1. More accurate results.
2. We are capable of measuring the effect of other variables on the progress of cancer.
3. Easy statistical analysis.