25. In a small countryside, there is a doctor and a nurse. The probabilities that the doctor and the nurse are available in the countryside are respectively 0.83 and 0.89. In an emergency case, find...

Extracted text: 25. In a small countryside, there is a doctor and a nurse. The probabilities that the doctor and the nurse are available in the countryside are respectively 0.83 and 0.89. In an emergency case, find the probability that both the doctor and the nurse are in countryside. Assume both events are independent. (a) 0.86 (c) 0.7387 (b) 0.9326 (d) 1