Concept explainers
The White or Wheat Bread Debate
Read the following study and answer the questions.
A baking company selected 36 women weighing different amounts and randomly assigned them to four different groups. The four groups were white bread only, brown bread only, low-fat white bread only, and low-fat brown bread only. Each group could eat only the type of bread assigned to the group. The study lasted for eight weeks. No other changes in any of the women’s diets were allowed. A trained evaluator was used to check for any differences in the women’s diets. The results showed that there were no differences in weight gain between the groups over the eight-week period.
1. Did the researchers use a population or a sample for their study?
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Check out a sample textbook solutionChapter 14 Solutions
Elementary Statistics: A Step By Step Approach
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