Assignment Instructions/ Description
Image transcription text9. This problem was modified from here. This study used a cross-over trial experiment to investigate whether
eating oat bran lowered serum cholesterol levels. Twelve individuals were randomly assigned a diet that
included either oat bran or corn flakes. After two weeks on the initial diet, serum cholesterol (mmol/L) was
measured and then participants were "crossed-over" to the other diet. After two-weeks on the second diet,
cholesterol levels were measured again.
Calculate the 98% confidence interval for the population difference in mean serum cholesterol for people
eating oat bran and those eating cornflakes "by-hand" by coding the steps in R. Then use an R function to
check your results. Report and interpret the interval in the context of the problem. (3 points)... Show more9. This problem was modified from here. This study used a cross-over trial experiment to investigate whether
eating oat bran lowered serum cholesterol levels. Twelve individuals were randomly assigned a diet that
included either oat bran or corn flakes. After two weeks on the initial diet, serum cholesterol (mmol/L) was
measured and then participants were "crossed-over" to the other diet. After two-weeks on the second diet,
cholesterol levels were measured again.
Calculate the 98% confidence interval for the population difference in mean serum cholesterol for people
eating oat bran and those eating cornflakes "by-hand" by coding the steps in R. Then use an R function to
check your results. Report and interpret the interval in the context of the problem. (3 points)