Calcium and Blood Pressure: Sample data were collected in a study of calcium supplements and their effects on blood pressure. A placebo group and a calcium group began the study with blood pressure measurements (based on data from “Blood Pressure and Metabolic Effects of Calcium Supplementation in Normotensive White and Black Men,” by Lyle et al., Journal of the American Medical Association, Vol. 257, No. 13). Sample values are listed below. At the 0.05 significance level, test the claim that the two sample groups come from population with the same standard deviation. Placebo: 124.6 104.8 96.5 116.3 106.1 128.8 107.2 123.1 118.1 108.5 120.4 122.5 113.6 Calcium: 129.1 123.4 102.7 118.1 114.7 120.9 104.4 116.3 109.6 127.7 108.0 124.3 106.6 121.4 113.2 Determine the hypotheses: _______________________ Test statistic: P-value: Conclusion: _ _______ If the experiment requires groups with equal standard deviations, are these two groups acceptable? _

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Calcium and Blood Pressure: Sample data were collected in a study of calcium supplements and their effects on blood pressure. A placebo group and a calcium group began the study with blood pressure measurements (based on data from “Blood Pressure and Metabolic Effects of Calcium Supplementation in Normotensive White and Black Men,” by Lyle et al., Journal of the American Medical Association, Vol. 257, No. 13). Sample values are listed below. At the 0.05 significance level, test the claim that the two sample groups come from population with the same standard deviation.

Placebo: 124.6 104.8 96.5 116.3 106.1 128.8 107.2 123.1 118.1 108.5 120.4 122.5 113.6

Calcium: 129.1 123.4 102.7 118.1 114.7 120.9 104.4 116.3 109.6 127.7 108.0 124.3 106.6 121.4 113.2

Determine the hypotheses: _________________________________________________________________

Test statistic: ______________________________ P-value: ____________________

Conclusion: ___________________________________________________________________________________
_________________________________________________________________________________________________

If the experiment requires groups with equal standard deviations, are these two groups acceptable? __________________________________________________________________________

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