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A group of 268 overweight people signed up for a weight loss program. Participants were asked...

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Advance Math

A group of 268 overweight people signed up for a weight lossprogram. Participants were asked to choose whether they wanted togo on a vegetarian diet or follow a traditional low-calorie dietthat included some meat. 153 people chose the vegetarian diet, andthe rest chose to be in the control group and continue to eat meat.There was a greater weight loss in the vegetarian group.

  1. What is the sample size of each group? What percentage ofpeople was in the vegetarian group? What percentage was in the meatgroup? (Round to the nearest percent.)
  2. What are the variables in this study? Remember that variablesare used to record the characteristics of individual people orthings. The description above does not necessarily name all thevariables - you have to make an educated guess about whatcharacteristics were measured and recorded in order to conduct thisstudy. For each variable, indicate whether it is acategorical variable or a numerical variable, andexplain why.
  3. What confounding variables might account for the increasedweight loss in the vegetarian group? Explain.
  4. an observational or a controlled study?
  5. should I design the study that is more likely to remove theeffect of confounding variables

Answer & Explanation Solved by verified expert
4.3 Ratings (831 Votes)
a Sample Size of Vegetarian diet Group 153 Sample Size of Control Group Traditional lowcalorie diet that included some meat 268 153 115 Percentage of people in Vegetarian diet Group 153268 X 100 5709 Percentage of people in Control Group    See Answer
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