About 90% of american adults had chickenpox before adulthood. we now consider a random sample of 120 american adults. (a) how many people in this sample would you expect to have had chickenpox in their childhood? (enter your answer as a whole number.) people and with what standard deviation? (round your answer to two decimal places.) people (b) would you be surprised if there were 104 people who have had chickenpox in their childhood? (round your answer to two decimal places.) since z = , which is two standard deviations away from the mean, it surprising for there to be 104 people who have had chickenpox in childhood. (c) what is the probability that 104 or fewer people in this sample have had chickenpox in their childhood? (round your answer to four decimal places.) how does this probability relate to your answer to part (b)? this probability coincides with the result of part (b). this probability does not coincide with the result of part (b)