In a study to investigate the effect of regular physical exercise on the reduction of high blood pressure in males aged 60-65, the researchers selected at random a sample of n₁ =12 males suffering from high blood pressure in the given a 12ge group and for a two-year period placed the subjects on a daily physical exercise program. A second sample of n₂ =12 males suffering from high blood pressure in the given age group was selected and again for the two-year period this group of subjects were placed on a physical exercise program for which they were required to perform only once a week. Finally a third sample of n3 =12 males suffering from high blood pressure in the given age group was selected. No exercise program was required for individuals in sample three. At the end of the two-year period the reduction in blood pressure was measured for each of the subjects in the study and is presented in the table on the next page. Table V.1: Reduction in Blood pressure for three groups of males aged 60-65 initially suffering from high blood pressure. Daily Exercise Weekly exercise No Exercise 21.2 15.6 4.5 32.0 20.4 12.2 11.2 15.7 18.5 29.0 17.4 6.7 11.4 4.1 23.5 15.1 5.8 25.7 19.7 5.6 - 5.7 - 14.8 4.9 8.6 18.6 -7.9 15.2 -2.3 -8.9 -1.2 8.6 30.9 10.4 23.7 22.8 11.2 216.1 192.6 4697.43 3786.64 1. Determine (using a = 0.05) if there is the mean reduction in blood pressure is i) higher for the group using daily exercise than the group using weekly 20.7 1180.17 exercise. ii) higher for the group using daily exercise than the group using no exercise. iii) higher for the group using weekly exercise than the group using no exercise. . Estimate the difference (with 95% confidence intervals) in the mean reduction in blood pressure between i) the group using daily exercise over the group using weekly exercise. ii) the group using daily exercise over the group using no exercise. iii) the group using weekly exercise over the group using no exercise.
In a study to investigate the effect of regular physical exercise on the reduction of high blood pressure in males aged 60-65, the researchers selected at random a sample of n₁ =12 males suffering from high blood pressure in the given a 12ge group and for a two-year period placed the subjects on a daily physical exercise program. A second sample of n₂ =12 males suffering from high blood pressure in the given age group was selected and again for the two-year period this group of subjects were placed on a physical exercise program for which they were required to perform only once a week. Finally a third sample of n3 =12 males suffering from high blood pressure in the given age group was selected. No exercise program was required for individuals in sample three. At the end of the two-year period the reduction in blood pressure was measured for each of the subjects in the study and is presented in the table on the next page. Table V.1: Reduction in Blood pressure for three groups of males aged 60-65 initially suffering from high blood pressure. Daily Exercise Weekly exercise No Exercise 21.2 15.6 4.5 32.0 20.4 12.2 11.2 15.7 18.5 29.0 17.4 6.7 11.4 4.1 23.5 15.1 5.8 25.7 19.7 5.6 - 5.7 - 14.8 4.9 8.6 18.6 -7.9 15.2 -2.3 -8.9 -1.2 8.6 30.9 10.4 23.7 22.8 11.2 216.1 192.6 4697.43 3786.64 1. Determine (using a = 0.05) if there is the mean reduction in blood pressure is i) higher for the group using daily exercise than the group using weekly 20.7 1180.17 exercise. ii) higher for the group using daily exercise than the group using no exercise. iii) higher for the group using weekly exercise than the group using no exercise. . Estimate the difference (with 95% confidence intervals) in the mean reduction in blood pressure between i) the group using daily exercise over the group using weekly exercise. ii) the group using daily exercise over the group using no exercise. iii) the group using weekly exercise over the group using no exercise.
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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Transcribed Image Text:. In a study to investigate the effect of regular physical exercise on the reduction
of high blood pressure in males aged 60-65, the researchers selected at random a
sample of n₁ =12 males suffering from high blood pressure in the given a 12ge
group and for a two-year period placed the subjects on a daily physical exercise
program. A second sample of n₂ =12 males suffering from high blood pressure
in the given age group was selected and again for the two-year period this group
of subjects were placed on a physical exercise program for which they were
required to perform only once a week. Finally a third sample of n3 =12 males
suffering from high blood pressure in the given age group was selected. No
exercise program was required for individuals in sample three. At the end of the
two-year period the reduction in blood pressure was measured for each of the
subjects in the study and is presented in the table on the next page.
Table V.1: Reduction in Blood pressure for three groups of
males aged 60-65 initially suffering from high blood pressure.
Daily Exercise Weekly exercise No Exercise
21.2
15.6
5.6
-5.7
- 14.8
4.5
32.0
20.4
12.2
15.7
18.5
29.0
17.4
6.7
11.4
11.2
4.1
30.9
23.5
10.4
15.1
23.7
5.8
22.8
25.7
11.2
19.7
216.1
192.6
4697.43
3786.64
a. Determine (using a = 0.05) if there is the mean reduction in blood pressure
is i) higher for the group using daily exercise than the group using
weekly
4.9
8.6
18.6
-7.9
15.2
-2.3
- 8.9
- 1.2
8.6
20.7
1180.17
exercise.
ii) higher for the group using daily exercise than the group using no
exercise.
iii) higher for the group using weekly exercise than the group using no
exercise.
b. Estimate the difference (with 95% confidence intervals) in the mean reduction
in blood pressure between
i) the group using daily exercise over the group using weekly exercise.
ii) the group using daily exercise over the group using no exercise.
iii) the group using weekly exercise over the group using no exercise.
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VIEWStep 5: Determine whether mean reduction in blood pressure higher for weekly group than no exercise group.
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VIEWStep 7: Determine 95% confidence intervals for difference of mean between daily and no exercise group.
VIEWStep 8: Determine 95% confidence intervals for difference of mean between weekly and no exercise group.
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