**Calculate the following probabilities:**

**• The only possible, mutually exclusive outcomes of the surgery are death, relief of symptoms, or continuation of symptoms. The probability of death is 0.02 and the relief of symptoms is 0.80. What is the probability that the patient will continue to have symptoms?**

**Answer:**

If x is the probability that the symptoms will continue, then:

1- [(probability of death)+(probability of relief from symptoms)]= x

1- [(0.02)+(0.80)] = x

0.18 = x