An experimental diagnostic test is developed to noninvasively detect the presence of trisomy 21, Down's syndrome. The test is administered to a group of 500 women considered to be at risk for a Down's fetus based on blood tests. The results of this test are shown below. What is the sensitivity of this new test? rn rnrnrn rnrnTrisomy 21rnrnrnNormal KaryotypernrnrnrnrnPositive Testrnrnrn100rnrnrn50rnrnrnrnrnNegative Testrnrnrn100rnrnrn250rnrnrnrn