Refer to the study described in Exercise 14.27. a. Considering the nine medications to be…

Refer to the study described in Exercise 14.27.

a. Considering the nine medications to be randomly selected from a population of possible medications, write a model for the study.

b. Give the expected mean squares for all sources of variability.

c. Indicate how your analysis and conclusions would change from those of Exercise 14.27

Exercise 14.27

Researchers conducted an experiment to compare the average oral body temperatures for persons taking one of nine different medications often prescribed for high blood pressure. The researchers were concerned that the effect of the drug may be different depending on the severity of the patient’s high blood pressure disorder. Patients with high blood pressure who satisfied the study’s entrance criteria were classified into one of the three levels of severity of the blood pressure disorder. The patients were then randomly assigned to receive one of the nine medications. Each patient in the study was given the assigned medication at 6:00 a.m. of the designated study day. Temperatures were taken at hourly intervals beginning at 8:00 a.m. and continuing for 10 hours. During this time, the patients were not allowed to do any physical activity and had to lie in bed. To eliminate the variability of temperature readings within a day, the average of the hourly determinations was the recorded response for each patient. These data are given in the accompanying table.

a. Identify the design for this experiment.

b. Write an appropriate statistical model and identify the parameters of the model.

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