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Triglycerides are blood constituents that are thought to play a role in coronary artery disease. An experiment was conducted to see if regular exercise could reduce triglyceride levels. Researchers measured the concentration of triglycerides in the blood serum of seven male volunteers before and after participation in a 10-week exercise program. The results are shown below. Note the variation in levels from one person to the next, both before and after. But an overall pattern of reduction after exercise is clear. An obvious question to ask is: Does exercise reduce triglyceride levels? (Hint: This is the same as asking "Are the mean triglyceride levels in the blood serum of males higher before participation in a 10 week exercise program?") Conduct a significance test at the 0.05 level of significance to answer the proposed research question. Volun teer Befor 1 2 3 4 5 6 1.09 7 1.51 After e 0.57 0.87 1.03 1.13 1.47 3.14 1.43 2.14 1.2 2.98 1.18 1.6 What code would be used to answer the research question? Assume the data is stored in datasets "after" and "before." O A. t.test(after, before,mu=0,alternative="less",paired=TRUE) O B. t.test(after, before,mu=0,alternative="greater", paired=TRUE) O C. t.test(after, before, mu=0, alternative="less") O D. t.test(after, before,mu=0, alternative="greater")

Triglycerides are blood constituents that are thought to play a role in coronary artery disease. An experiment was conducted to see if regular exercise could reduce triglyceride levels. Researchers measured the concentration of triglycerides in the blood serum of seven male volunteers before and after participation in a 10-week exercise program. The results are shown below. Note the variation in levels from one person to the next, both before and after. But an overall pattern of reduction after exercise is clear. An obvious question to ask is: Does exercise reduce triglyceride levels? (Hint: This is the same as asking "Are the mean triglyceride levels in the blood serum of males higher before participation in a 10 week exercise program?") Conduct a significance test at the 0.05 level of significance to answer the proposed research question. Volun teer Befor 1 2 3 4 5 6 1.09 7 1.51 After e 0.57 0.87 1.03 1.13 1.47 3.14 1.43 2.14 1.2 2.98 1.18 1.6 What code would be used to answer the research question? Assume the data is stored in datasets "after" and "before." O A. t.test(after, before,mu=0,alternative="less",paired=TRUE) O B. t.test(after, before,mu=0,alternative="greater", paired=TRUE) O C. t.test(after, before, mu=0, alternative="less") O D. t.test(after, before,mu=0, alternative="greater")

Linear Algebra: A Modern Introduction
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter4: Eigenvalues And Eigenvectors
Section4.6: Applications And The Perron-frobenius Theorem
Problem 22EQ
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Triglycerides are blood constituents that are thought to play a role in coronary artery disease. An experiment was conducted to see if regular exercise could reduce triglyceride levels. Researchers measured the concentration of triglycerides in the blood serum of seven male volunteers before and after participation in a 10-week exercise program. The results are shown below. Note the variation in levels from one person to the next, both before and after. But an overall pattern of reduction after exercise is clear. An obvious question to ask is: Does exercise reduce triglyceride levels? (Hint: This is the same as asking "Are the mean triglyceride levels in the blood serum of males higher before participation in a 10 week exercise program?") Conduct a significance test at the 0.05 level of significance to answer the proposed research question. Volun teer 1 2 3 4 5 6 7 Befor After e 0.57 1.03 1.47 3.14 1.43 2.14 1.2 2.98 1.09 1.18 1.51 1.6 0.87 1.13 What code would be used to answer the research question? Assume the data is stored in datasets "after" and "before." O A. t.test(after, before, mu=0,alternative="less",paired=TRUE) O B. t.test(after, before,mu=0,alternative="greater", paired=TRUE) O C. t.test(after, before,mu=0, alternative="less") O D. t.test(after, before,mu=0, alternative="greater")
Transcribed Image Text:Triglycerides are blood constituents that are thought to play a role in coronary artery disease. An experiment was conducted to see if regular exercise could reduce triglyceride levels. Researchers measured the concentration of triglycerides in the blood serum of seven male volunteers before and after participation in a 10-week exercise program. The results are shown below. Note the variation in levels from one person to the next, both before and after. But an overall pattern of reduction after exercise is clear. An obvious question to ask is: Does exercise reduce triglyceride levels? (Hint: This is the same as asking "Are the mean triglyceride levels in the blood serum of males higher before participation in a 10 week exercise program?") Conduct a significance test at the 0.05 level of significance to answer the proposed research question. Volun teer 1 2 3 4 5 6 7 Befor After e 0.57 1.03 1.47 3.14 1.43 2.14 1.2 2.98 1.09 1.18 1.51 1.6 0.87 1.13 What code would be used to answer the research question? Assume the data is stored in datasets "after" and "before." O A. t.test(after, before, mu=0,alternative="less",paired=TRUE) O B. t.test(after, before,mu=0,alternative="greater", paired=TRUE) O C. t.test(after, before,mu=0, alternative="less") O D. t.test(after, before,mu=0, alternative="greater")
What would be the conclusion? O There is statistically significant evidence to suggest the mean triglyceride levels in the blood serum of males is higher before rather than after participation in a 10 week exercise program. There is not statistically significant evidence to suggest the mean triglyceride levels in the blood serum of males is higher before rather than after participation in a 10 week exercise program. O There is statistically significant evidence to suggest the median triglyceride levels in the blood serum of males is higher before rather than after participation in a 10 week exercise program. O There is not statistically significant evidence to suggest the median triglyceride levels in the blood serum of males is higher before rather than after participation in a 10 week exercise program.
Transcribed Image Text:What would be the conclusion? O There is statistically significant evidence to suggest the mean triglyceride levels in the blood serum of males is higher before rather than after participation in a 10 week exercise program. There is not statistically significant evidence to suggest the mean triglyceride levels in the blood serum of males is higher before rather than after participation in a 10 week exercise program. O There is statistically significant evidence to suggest the median triglyceride levels in the blood serum of males is higher before rather than after participation in a 10 week exercise program. O There is not statistically significant evidence to suggest the median triglyceride levels in the blood serum of males is higher before rather than after participation in a 10 week exercise program.
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