A researcher creates a screening test for sleep apnea. An independent blind comparison was made with a gold standard for diagnosis of sleep apnea among 500 patients. Among the 100 outpatients found to have sleep apnea according to the gold standard, 90 were positive on the screening test. Among 400 patients found not to have sleep apnea according to the gold standard, 100 patients were found to be positive for the test. What are the sensitivity and positive predictive value, respectively, of this screening test? Question 7 options: 47% and 90% 90% and 47% 75% and 97% 97% and 75%