1. A house needs to be reroofed in spring. To do this a dry windless day is needed. The probability of getting a dry day is 0.8, a windy day is 0.4. As you would expect, dry and windy are not independent events. The probability of a wet and windy day is 0.2. What is the probability of getting: (a) a wet day? (b) a day that is either wet, windy, or both? (c) a day when the house can be reroofed