hw12 - e. Can cause and effect statements be made? Explain....

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Statistics Homework # 12 Due November 20 1. A researcher wishes to try three different techniques to lower the blood pressure of individuals diagnosed with high blood pressure. The participants are randomly assigned to three groups, the first group takes medication, the second group exercises, and the third group follows a special diet. After four weeks, the reduction in each person’s blood pressure is recorded. At a significance level of .05, test to claim that there is no difference among the mean. The data are shown below. Medication Exercise Diet 10 6 5 12 8 9 9 3 12 15 0 8 13 2 4 3 a. What type of data are these values? b. Complete the Analysis of Variance. c. Calculate the p-value and interpret in terms of the problem. d. Do confidence intervals and interpret in terms of the problem.
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Unformatted text preview: e. Can cause and effect statements be made? Explain. 2. The amount of sodium in milligrams, in on serving for a random sample of four different kinds of food is listed here. At the .01 level of significance, is there sufficient evidence to conclude that a difference in mean sodium amounts exist among condiments, cereals, dog food, and desserts? Condiments Cereal Dog food desserts 270 260 500 100 130 220 600 80 230 290 300 200 180 290 400 150 80 200 100 70 320 100 200 140 What type of data are these values? b. Complete the Analysis of Variance. c. Calculate the p-value and interpret in terms of the problem. d. Do at least 2 confidence intervals and interpret in terms of the problem....
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This note was uploaded on 04/23/2008 for the course 40 256 taught by Professor Bowman during the Fall '07 term at Bloomsburg.

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