Prof Rea’s Exam Q10 A study was conducted to investigate how…
Prof Rea’s Exam Q10 A study was conducted to investigate how effective a new diet was in lowering cholesterol. Ten subjects’ cholesterol is measured before and after they eat meals from a new diet developed by the researchers. Cholesterol is recorded in units milligrams per deciliter of blood (mg/dL), with a larger number corresponding to higher cholesterol. Assume the population of differences is normally distributed. Subject A B C D E F G H I J Before 239 240 230 242 231 220 240 237 227 249 After 230 230 231 239 220 220 235 230 223 240 Difference (before minus after) Explain why this data is paired. Calculate and interpret a 99% confidence interval for the mean difference in cholesterol before and after utilizing the new diet. Show all steps of building a confidence interval and round all calculated values to two decimal places. Write desmos functions used to compute sample statistics. Sandra calculated a 90% confidence interval for the mean difference in cholesterol before and after utilizing the new diet to be (3.28, 8.12). What can you reasonably conclude about the new diet based on the interval?