The NIH is creating a test for the Covid virus. The incidence of a Covid is low, 10 percent in the general population. There is a trial version, but it sometimes misses the disease. The probability of a false negative is 3 percent. Similarly, someone who does not have Covid, will sometimes get a positive reading. The probability of this is 30 percent. Fill in the tree diagram and... Answer in percent to 2 decimal places. Marginal Probabilities Conditional Probabilities Joint Probabilities P(D) < P(positive | D) P(D and positive) % False negative P(negative |D) P(D and negative) False Positive P(no D) P(positive | no D) P(no D and positive) P(negative | no D) P(no D and negative) Calculate the probability that a positive test result means someone has Covid. % 200