Question

In a group of 60 students, the probability that at most 30 of them like to swimis 56%. What is the probability that at least 31 of them like to swim?

Answer 1

Answer= 44%

P(A)= the probability that at most 30 of them like to swim

P(B)= the probability that at least 31 of them like to swim

Notice that P(A)+P(B) have to add up 100%

P(A)+P(B)=100% then solving for P(B)

P(B)= 100% - 56%= 44%