A hypertensions trial is mounted and 12 participants are randomly assigned to receive either a new medication or a placebo. Each participant takes assigned medication and their systolic blood pressure (SBP) is recorded after 6 months on the assigned medication the data are shown in table 7-9 is there a difference in the mean SBP between treatment? Run the appropriate test at a =0.05 ## Systolic Blood Pressure by Treatment### Placebo vs. New Treatment| Placebo | New Treatment ||---------|---------------|| 134 | 114 || 143 | 117 || 148 | 121 || 142 | 124 || 150 | 122 || 160 | 128 |This table compares the systolic blood pressure measurements (in mm Hg) of individuals who were given a placebo versus those who received a new treatment. - The left column lists the blood pressure readings for subjects who received the placebo.- The right column lists the blood pressure readings for subjects who received the new treatment.From the data presented, it appears that the new treatment might be effective in lowering systolic blood pressure compared to the placebo.

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Description: A hypertensions trial is mounted and 12 participants are randomly assigned to receive either a new medication or a placebo. Each participant takes assigned medication and their systolic blood pressure (SBP) is recorded after 6 months on the assigned

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Answered: Placebo New Treatment 134 114 143 117…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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A hypertensions trial is mounted and 12 participants are randomly assigned to receive either a new medication or a placebo. Each participant takes assigned medication and their systolic blood pressure (SBP) is recorded after 6 months on the assigned medication the data are shown in table 7-9 is there a difference in the mean SBP between treatment? Run the appropriate test at a =0.05

## Systolic Blood Pressure by Treatment

### Placebo vs. New Treatment

| Placebo | New Treatment |
|---------|---------------|
| 134 | 114 |
| 143 | 117 |
| 148 | 121 |
| 142 | 124 |
| 150 | 122 |
| 160 | 128 |

This table compares the systolic blood pressure measurements (in mm Hg) of individuals who were given a placebo versus those who received a new treatment.

- The left column lists the blood pressure readings for subjects who received the placebo.
- The right column lists the blood pressure readings for subjects who received the new treatment.

From the data presented, it appears that the new treatment might be effective in lowering systolic blood pressure compared to the placebo.

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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