11. The surface area in square meters of the human body can be found using where h is the height in centimeters and m is the
mass in kilograms. Find the surface area of a 15-year-old boy with a height of
183 centimeters and a mass of 74 kilograms.

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)