Chapter 4, Problem AP1.11CPT

To determine

To select the best option from the multiple choice question according to the given question.

Answer to Problem AP1.11CPT

Option (d) is correct.

Explanation of Solution

Given:

Weights: $3500,3500,4000$ pounds.

Gasoline: Amoco, Marathon, Speedway.

Requirements experiments are replication, control and randomness.

Thus by looking at all the options we can to know that the option (d) is the good way to organize the study because we introduce replication for each combination, randomness i.e. runs occur in random order and control as the two variables weight and gasoline are kept under control. Thus, option (d) is the correct option.