Triglycerides are blood constituents that are thought to play a role in coronary artery disease. To see whether regular exercise could reduce triglyceride levels, researchers measured the concentration of triglycerides in the blood serum of 5 male volunteers, before and after participation in an 8 week exercise program. The results are shown below: Subject Before After 1 2.1 1.9 1.8 1.7 2.4 2.5 1.6 1.3 2.0 1.5 2 3 4 5 Assume that triglycerides are normally distributed. Give a 99% confidence interval for the mean difference between triglycerides before and after the exercise program (Before-After). Based on this confidence interval, is there evidence that exercise reduces triglycerides? [-0.1747, 0.5747] There is evidence that exercise reduces triglycerides. [-0.2604, 0.6604] There is no evidence that exercise reduces triglycerides. [-0.0326, 0.4326] There is no evidence that exercise reduces triglycerides. [0.0970, 0.3029] There is evidence that exercise reduces triglycerides. [-0.0576, 0.4576]

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
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Triglycerides are blood constituents that are thought to play a role in coronary artery
disease. To see whether regular exercise could reduce triglyceride levels, researchers
measured the concentration of triglycerides in the blood serum of 5 male volunteers,
before and after participation in an 8 week exercise program. The results are shown
below:
Subject Before After
1
2.1
1.9
1.8
2
3
4
5
2.4
1.6
2.0
1.7
2.5
1.3
1.5
Assume that triglycerides are normally distributed.
Give a 99% confidence interval for the mean difference between triglycerides before
and after the exercise program (Before-After).
Based on this confidence interval, is there evidence that exercise reduces
triglycerides?
[-0.1747, 0.5747]
There is evidence that exercise reduces triglycerides.
[-0.2604, 0.6604]
There is no evidence that exercise reduces triglycerides.
[-0.0326, 0.4326]
There is no evidence that exercise reduces triglycerides.
[0.0970, 0.3029]
There is evidence that exercise reduces triglycerides.
[-0.0576, 0.4576]
Transcribed Image Text:Triglycerides are blood constituents that are thought to play a role in coronary artery disease. To see whether regular exercise could reduce triglyceride levels, researchers measured the concentration of triglycerides in the blood serum of 5 male volunteers, before and after participation in an 8 week exercise program. The results are shown below: Subject Before After 1 2.1 1.9 1.8 2 3 4 5 2.4 1.6 2.0 1.7 2.5 1.3 1.5 Assume that triglycerides are normally distributed. Give a 99% confidence interval for the mean difference between triglycerides before and after the exercise program (Before-After). Based on this confidence interval, is there evidence that exercise reduces triglycerides? [-0.1747, 0.5747] There is evidence that exercise reduces triglycerides. [-0.2604, 0.6604] There is no evidence that exercise reduces triglycerides. [-0.0326, 0.4326] There is no evidence that exercise reduces triglycerides. [0.0970, 0.3029] There is evidence that exercise reduces triglycerides. [-0.0576, 0.4576]
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