1) You test a new drug to reduce blood pressure. A group of 15 patients with high blood pressure report the following systolic pressures (measured in mm Hg): ̄y s before medication: 187 120 151 143 160 168 181 197 133 128 130 195 130 147 193 157.53 27.409 after medication: 187 120 149 147 159 168 179 197 135 127 133 194 130 146 191 156.47 26.691 change: 1 1 3 -3 2 1 3 1 -1 2 -2 2 1 2 3 1.067 1.7915 a) Calculate a 90% CI for the change in blood pressure. b) Calculate a 99% 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?
1) You test a new drug to reduce blood pressure. A group of 15 patients with high blood pressure report the following systolic pressures (measured in mm Hg): ̄y s before medication: 187 120 151 143 160 168 181 197 133 128 130 195 130 147 193 157.53 27.409 after medication: 187 120 149 147 159 168 179 197 135 127 133 194 130 146 191 156.47 26.691 change: 1 1 3 -3 2 1 3 1 -1 2 -2 2 1 2 3 1.067 1.7915 a) Calculate a 90% CI for the change in blood pressure. b) Calculate a 99% 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?
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter2: Systems Of Linear Equations
Section2.4: Applications
Problem 1EQ: 1. Suppose that, in Example 2.27, 400 units of food A, 600 units of B, and 600 units of C are placed...
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1) You test a new drug to reduce blood pressure. A group of 15 patients with high blood pressure report the following systolic pressures (measured in mm Hg): ̄y s
before medication: 187 120 151 143 160 168 181 197 133 128 130 195 130 147 193 157.53 27.409
after medication: 187 120 149 147 159 168 179 197 135 127 133 194 130 146 191 156.47 26.691
change: 1 1 3 -3 2 1 3 1 -1 2 -2 2 1 2 3 1.067 1.7915
a) Calculate a 90% CI for the change in blood pressure.
b) Calculate a 99% 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?
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