a)
To explain the importance of randomization.
a)
Answer to Problem 23E
Randomization is important to equalize two factors.
Explanation of Solution
There might be bias in the results or in the subjects. Therefore, there is possibility that the subject responses might be related to other factors such as diet, exercise or genetics. To reduce this bias and equalize to groups with respect to unknown factor we need randomization.
b)
To explain the advantages and disadvantages of using 100 subjects.
b)
Explanation of Solution
The advantage of the using 100 subjects is to minimize the impact of individual variability in the responses. The disadvantage is the experiment would become more costly and time consuming.
Chapter 13 Solutions
Stats: Modeling the World Nasta Edition Grades 9-12
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