1. What is the sample standard deviation?2. What is the test statistic?3. Draw the necessary curve.4. Make a conclusionhere is a significant difference between before and afterorThere is no significant difference between the before and after. Several recent studies have suggested that people who suffer from abnormally high blood pressure can benefit from regular exercise. A medical researcher decides to test her belief that walkingbriskly for at least half an hour a day has the effect of lowering blood pressure. She conducts a small pilot study. If results from it are supportive, she will apply for funding for a larger study. Sherandomly samples three of her patients who have high blood pressure. She measures their systolic blood pressure initially and then again a month later after they participate in her exerciseprogram. The table shows the results.Do a significance testing with a 95% confidence level.Subject123Before150165135After130140120

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1. What is the sample standard deviation? 2. What is the test statistic? 3. Draw the necessary curve. 4. Make a conclusion here is a significant difference between before and after or There is no significant difference between the before and after.

1. What is the sample standard deviation? 2. What is the test statistic? 3. Draw the necessary curve. 4. Make a conclusion here is a significant difference between before and after or There is no significant difference between the before and after.

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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Question

1. What is the sample standard deviation?

2. What is the test statistic?

3. Draw the necessary curve.

4. Make a conclusion

here is a significant difference between before and after

There is no significant difference between the before and after.

Several recent studies have suggested that people who suffer from abnormally high blood pressure can benefit from regular exercise. A medical researcher decides to test her belief that walking
briskly for at least half an hour a day has the effect of lowering blood pressure. She conducts a small pilot study. If results from it are supportive, she will apply for funding for a larger study. She
randomly samples three of her patients who have high blood pressure. She measures their systolic blood pressure initially and then again a month later after they participate in her exercise
program. The table shows the results.
Do a significance testing with a 95% confidence level.
Subject
1
2
3
Before
150
165
135
After
130
140
120

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