According to a recent study, 38% of all women will suffer a hip fracture because of osteoporosis by the age of 85. If six women aged 85 are randomly selected, what is the probability that
a) None of them will suffer (or has suffered) a hip fracture due to osteoporosis?
b) At least four of them will suffer (or have suffered) a hip fracture due to osteoporosis?
c) Fewer than two of them will suffer (or have suffered) a hip fracture due to osteoporosis?