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

Answer to Problem T4.5SPT
Option (d) is correct.
Explanation of Solution
The best reason for randomly assigning the treatment levels to experimental units is to eliminate the effect of any uncontrolled factors. Thus we can say that random assignment will tend to average out all other uncontrolled factors such as soil fertility so that they are confounded with the treatment effects. Thus, option (d) is the correct option.
Chapter 4 Solutions
PRACTICE OF STATISTICS F/AP EXAM
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