To determine Explain the reason for blocking the factor weight level in the given experiment. Explanation Given info: A researcher conducted an experiment to investigate the effect of exercise in combating insomnia. For this a sample of 40 subjects were considered and 20 subjects were randomly assigned to exercise program. In this experiment if some of the 40 subjects have maintained a healthy weight while the other subjects are overweight then the researcher randomly assigns the groups to exercise program after blocking the subjects by weight level. Justification: Answers will vary; one of the possible answers is given below: Experimental study : In a designed experimental study, the researchers allocate individuals to a certain group under study and change the values of an explanatory variable intentionally, after which, the values of the response variable for each group is recorded. All the 40 subjects are divided into two groups with 20 individuals. Each group is randomly assigned to one of two treatments, where one treatment is exercise program and the other treatment is no exercise program to observe the behaviors of the individuals with an attempt of influencing the outcome of this study. Each group is kept under consideration after assigning exercise program and the effectiveness of exercise is observed. There is an attempt to influence the subject as the value of explanatory variable is influenced and controlled by researcher under study...

5th Edition

ISBN: 9780135163825

Author: De Veaux, Richard D., Velleman, Paul F., BOCK, David E.

Publisher: Pearson,

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Chapter 11, Problem 40E

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Explain the reason for blocking the factor weight level in the given experiment.

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Chapter 11, Problem 39E

Chapter 11, Problem 41E

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