An image of two groups of women: with children on the left and childfree on the right.

A survey from 2018 revealed that 36% of American women are childfree. If 5 American women are randomly selected, find the probability that ... (Round the answers to 4 decimal places.)

a) ... none of them are childfree:

b) ... 2 of them are childfree:

c) ... at most 4 are childfree: