### Study SummaryA crossover study was conducted to examine the effects of oat bran cereal on serum cholesterol levels in males with hypercholesterolemia. Fourteen participants were assigned randomly to a diet including either oat bran or corn flakes. After two weeks, their low-density lipoprotein (LDL) cholesterol levels were measured. Each participant then switched to the alternate diet, and LDL levels were measured again after another two-week period.#### LDL Cholesterol Levels (mmol/l)| Subject | Corn Flakes | Oat Bran ||---------|-------------|----------|| 1 | 4.61 | 3.84 || 2 | 6.42 | 5.57 || 3 | 5.40 | 5.85 || 4 | 4.54 | 4.80 || 5 | 3.98 | 3.68 || 6 | 3.82 | 2.96 || 7 | 5.01 | 4.41 || 8 | 4.34 | 3.72 || 9 | 3.80 | 3.49 || 10 | 4.56 | 3.84 || 11 | 5.35 | 5.26 || 12 | 3.89 | 3.73 || 13 | 2.25 | 1.84 || 14 | 4.24 | 4.14 |### Questions**(a)** Which of the following data collection methods would be most appropriate to obtain data on subjects’ cholesterol?- **(i)** Ask each subject what his/her cholesterol level is while on each diet.- **(ii)** Have a medically trained professional conduct a standard laboratory cholesterol measurement for each subject while they are on each diet.**Recommendation:** It is generally more reliable to have a medically trained professional measure cholesterol levels in a laboratory setting, as this ensures accurate and consistent data collection.**(b)** Are the two samples of data paired or independent?**Answer:** The samples are paired because each subject serves as their own control, experiencing both diets and providing related measurements under each condition.

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Answered: 1. A crossover study was conducted to…

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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