Based on a poil, 50% of adults believe in reincamason. Assume that 7 adults are randomily soloctod, and find the indicated probabiay. Complete parts a and b below. a. What is the probability that exacty 6 of the solectod adulte believe in reincamation? The probabilty that exactly 6 of the 7 adults bolieve in reincarnation is (Round to throe docimal places as needed.) b. What is the probability that at loast 6 of the selected adults besiove in reincarnation? The probability that at loast 6 of the soloctod adults beliove in reincamation is (Round to threo decimal pleces as needed.)