*10) The following in a survey of people who went to a physician who were asked what their weight was and what their LDL

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10 The Following In A Survey Of People Who Went To A Physician Who Were Asked What Their Weight Was And What Their Ldl 1 (36.43 KiB) Viewed 28 times

*10) The following in a survey of people who went to a physician who were asked what their weight was and what their LDL cholesterol level was Weight (in Pounds) Cholesterol (in LDL points) 150 60 50 200 70 120 45 220 30 300 100 25 a) Does there appear to be a linear correlation between weight and cholesterol? Why or why not? You may use the following statistics if you wish, where x = weight, and y = cholesterol * = 181.67, s. = 73.87, y = 46.67, , = 17.22 (1 point) b) If you remove the person who weighs 100 potands from the survey, the summary statistics for the remaining five participants is 69.42. 51, 5, = 15.17, r = - 0.99487059 Does this person who weighs 100 pounds appear to be an influential participant in the lincar correlation between weight and cholesterol? Explain why or why not. (1 point) I = 198, 5,= c) Use the first five participants (everyone but the 100 pound person) to find the linear regression model that will predict someone's HDI. cholesterol level given their weight in pounds. You may use the summary statistics from par b) (2 points) d) Use the model from part c) to approximate the HDL cholesterol level of a person who weighs 150 pounds. (1 point) c) Find the residual of the 300 pound person from the survey from the linear regression line from parte). Does your model overestimate or underestimate the cholesterol of this 300 pound person (1 point)