for a specific day, the weather forecasters predict a 60% chance of a storm, a 25% chance of rain, and a 50% chance of snow. furthermore, they anticipate a 90% chance of either a non-stormy or a non-rainy weather and a 30% chance of a stormy snowy weather. lastly, the forecasters claim it cannot be rainy and snowy at the same time. find the probability that the weather will be either stormy or rainy or snowy. assume event a: the weather will be stormy; event b: the weather will be rainy; event c: the weather will be snowy.
