4.13. According to Nielsen Media Research, approximately 86% of all U.S. households have high-definition television (HDTV). In addition, 49% of all U.S. households own digital video recorders (DVR). Suppose 40% of all U.S. households have HDTV and have DVR. A U.S. household is randomly selected. a. What is the probability that the household has HDTV or has DVR? b. What is the probability that the household does not have HDTV or does have DVR? c. What is the probability that the household does have HDTV or does not have DVR? d. What is the probability that the household does not have HDTV or does not have DVR