According to a recent poll. 50% of residents from a certain large region took a vacation away from home in 201T. Suppose two residents from the region are randomly selected. Complete parts (a) through (6) below. a. What is the probability that both took a vacation away from home in 2017? The probability that both took a vacation away from home is 0.2500 . (Round to four decimal places as needed.) b. What is the probability that neither took a vacation away from home in 2017'? The probability that neither took a vacation away from home is (Round to four decimal places as needed.)