When people get a positive test result, they become really worried believing they are truly sick. Usually, the proper statistical probabilities of the disease are ignored. If the probability of COVID21 is too low, 1 case in every 1400 person in the population. The test for COVID21 is 95% accurate. In other words, it provides a false positive 5% of the time (the probability of having a positive result while the person is not having the disease is 0.05). Also, the probability of a positive test result for a person who is truly sick is 0.99 (that is, the test provides a false negative result is 0.01). If a person has tested positive, what is the probability that he is truly sick