4. Laboratory measures of cardiovascular reactivity are receiving increasing attention. Much of the expanded interest is based on the belief that these measures, obtained under challenge from physical and psychological stressors, may yield a more biologically meaningil index of cardiovascular inction than more traditional static measures. Typically, measurement of cardiovascular reactivity involves the use of an automated bloodpressure monitor to examine the changes in blood pressure before and after a stimulating experience (such as playing a video game). For this purpose, blood-pressure measurements were made with the VitaStat blood-pressure machine both before and after playing a video game. Similar measurements were obtained using manual methods for measuring blood pressure. A person was classied as a \"reactor\" if his or her DBP increased by 10 mm Hg or more aer playing the game and as a nonreactor otherwise. The results are given below (LE Table 3.11 in the book). ADBP, automated ADBP manual a. If the manual measurements are regarded as the \"true\" measure of reactivity, then what is the sensitivity of automated DBP measurements? b. What is the specicity of automated DBP measurements? c. If the population tested is representative of the general population, then what are the PV+ and PV- using this test