The Rapid Test is used to determine whether someone has HIV the virus that causes AIDS. The false-positive and false-negative rates are .027 and .080, respectively. A physician has just received the Rapid Test report that his patient tested positive. Before receiving the results, the physician assigned his patient to the low-risk group defined on the basis of several variables with only a 0.5% probability of having HIV. What is the probability that the patient actually has HIV?