- Question 2 30 Marks The Data Shown In Table 2 Are Based On A Study Conducted With A Group Of Dietitians To See If The 1 (449.8 KiB) Viewed 40 times
Question 2 (30 Marks) The data shown in Table 2 are based on a study conducted with a group of dietitians to see if the number of grams of fat per daily intake is related to cholesterol levels. If there is a significant relationship, predict the cholesterol level of a person on a diet consuming 8.5 grams of fat per day. Fat grams x Cholesterol level y 6.8 183 Table 2 5.5 201 8.2 10 8.6 9.1 8.6 10.4 193 283 222 250 190 218 a. Draw the scatter plot. b. Compute the value of the correlation coefficient. c. Test the significance of the correlation coefficient at a = 0.05. (5 marks) d. Determine the regression line equation if r is significant. (2 marks) e. Plot the regression line on the scatter plot if appropriate. (2 marks) f. Predict y' for a specific value of x if appropriate. (2 marks) g. Find the standard error of the estimate. (5 marks) h. Find the 95% prediction interval of the cholesterol level of a person who consumes 10 grams of fat. (2 marks) (6 marks) (6 marks)