50% of babies are born female. olive wants to find probability that 20 or more of the 50 babies born today were female. we need to design a simulations. which random device device can we use to best represent this situation

Since the probability that 50% of the babies born are female, she could use any probability model that is 50/50.

For example, she could flip a coin. Or she could roll a die, using the even numbers for girls and odd numbers for boys.