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Category > Management Posted 24 Jan 2018 My Price 8.00

comparison of the mean number

9.16 Refer to Exercise 9.13. The researcher wants to determine which of the new agents produced a significantly larger mean weight loss in comparison to the standard agent. Use α = .05 in making this determination.

Exercise 9.13

9.13 Researchers conducted an experiment to compare the effectiveness of four new weight reducing agents to that of an existing agent. The researchers randomly divided a random sample of 50 males into five equal groups, with preparation A1 assigned to the first group, A2 to the second group, and so on. They then gave a prestudy physical to each person in the experiment and told him how many pounds overweight he was. A comparison of the mean number of pounds overweight for the groups showed no significant differences. The researchers then began the study program, and each group took the prescribed preparation for a fixed period of time. The weight losses recorded at the end of the study period are given here:

The standard agent is labeled agent S, and the four new agents are labeled A1, A2, A3, and A4. The data and a computer printout of an analysis are given here.

 

 

 

Run an analysis of variance to determine whether there are any significant differences among the five weight-reducing agents. Use

 α = .05. Do any of the AOV assumptions appear to be violated? What conclusions do you reach concerning the mean weight loss achieved using the five different agents?

 

Answers

Maurice Tutor
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Status NEW Posted 24 Jan 2018 07:01 PM My Price 8.00

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