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1) You test a new drug to reduce blood pressure. A group of 10 patients with high blood pressure report the following systolic pressures (measured in mm Hg): y S before medication: 178 111 142 134 151 159 172 188 124 119 147.8 26.30 after medication: 173 109 142 133 150 158 168 183 119 114 144.9 25.90 change: 5201114 5 5 5 2.9 2.079 a) Calculate a 90% CI for the change in blood pressure. b) Calculate a 99.9% CI for the change in blood pressure. c) Does either interval (the one you calculated in (a) or (b)) include 0? Why is this important? d) Now conduct a one sample t-test using μ = 0, and α = .10. Are the results consistent with (a)? Why or why not? Make sure you understand this. e) Finally, conduct a one sample t-test using μ = 0, and a = .001. Are the results consistent with (b)? Why or why not? Make sure you understand this.

1) You test a new drug to reduce blood pressure. A group of 10 patients with high blood pressure report the following systolic pressures (measured in mm Hg): y S before medication: 178 111 142 134 151 159 172 188 124 119 147.8 26.30 after medication: 173 109 142 133 150 158 168 183 119 114 144.9 25.90 change: 5201114 5 5 5 2.9 2.079 a) Calculate a 90% CI for the change in blood pressure. b) Calculate a 99.9% CI for the change in blood pressure. c) Does either interval (the one you calculated in (a) or (b)) include 0? Why is this important? d) Now conduct a one sample t-test using μ = 0, and α = .10. Are the results consistent with (a)? Why or why not? Make sure you understand this. e) Finally, conduct a one sample t-test using μ = 0, and a = .001. Are the results consistent with (b)? Why or why not? Make sure you understand this.

MATLAB: An Introduction with Applications
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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1) You test a new drug to reduce blood pressure. A group of 10 patients with high blood pressure report the following systolic pressures (measured in mm Hg): y S before medication: 178 111 142 134 151 159 172 188 124 119 147.8 26.30 after medication: 173 109 142 133 150 158 168 183 119 114 144.9 25.90 change: 5201114 5 5 5 2.9 2.079 a) Calculate a 90% CI for the change in blood pressure. b) Calculate a 99.9% CI for the change in blood pressure. c) Does either interval (the one you calculated in (a) or (b)) include 0? Why is this important? d) Now conduct a one sample t-test using μ = 0, and α = .10. Are the results consistent with (a)? Why or why not? Make sure you understand this. e) Finally, conduct a one sample t-test using μ = 0, and a = .001. Are the results consistent with (b)? Why or why not? Make sure you understand this.
Transcribed Image Text:1) You test a new drug to reduce blood pressure. A group of 10 patients with high blood pressure report the following systolic pressures (measured in mm Hg): y S before medication: 178 111 142 134 151 159 172 188 124 119 147.8 26.30 after medication: 173 109 142 133 150 158 168 183 119 114 144.9 25.90 change: 5201114 5 5 5 2.9 2.079 a) Calculate a 90% CI for the change in blood pressure. b) Calculate a 99.9% CI for the change in blood pressure. c) Does either interval (the one you calculated in (a) or (b)) include 0? Why is this important? d) Now conduct a one sample t-test using μ = 0, and α = .10. Are the results consistent with (a)? Why or why not? Make sure you understand this. e) Finally, conduct a one sample t-test using μ = 0, and a = .001. Are the results consistent with (b)? Why or why not? Make sure you understand this.
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