Concept explainers
(a)
To find out what other variables might be confounded with a mother’s consumption of diet soda during pregnancy.
(a)
Answer to Problem 70E
The health of the mother during pregnancy and the nutrients that the mother intake during the period.
Explanation of Solution
In this study, the researchers study about the children of mothers who drank diet soda daily during pregnancy were twice likely to be overweight at age one or not. The study found out that those children were found out to be overweight than those whose mother did not drink diet soda.
In this context, the other variables that might be confounded with a mother’s consumption of diet soda during pregnancy are the health of the mother during pregnancy and the nutrients that the mother intake during the period. As it can be explained as if the mothers were healthy before also so their children will surely found to be healthy.
(b)
To describe a completely randomized design for this experiment.
(b)
Explanation of Solution
In this study, the researchers study about the children of mothers who drank diet soda daily during pregnancy were twice likely to be overweight at age one or not. The study found out that those children were found out to be overweight than those whose mother did not drink diet soda.
Thus, we have to randomly assign
So, it is given there are
We have to randomly assign the subjects to the treatment using randomization method. This can be done as;
Firstly, choose a number. Then, select a first
Then the remaining
Chapter 4 Solutions
PRACTICE OF STATISTICS F/AP EXAM
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