Based on a poll, 50% of adults believe in reincarnation. Assume that 4 adults are randomly selected, and nd the indicated probability. Complete parts (a) through (d) below. a. What is the probability that exactly 3 of the selected adults believe in reincarnation? The probability that exactly 3 of the 4 adults believe in reincarnation is 0.250 . (Round to three decimal places as needed.) b. What is the probability that all of the selected adults believe in reincarnation? The probability that all ofthe selected adults believe in reincarnation is :|. (Round to three decimal places as needed.)