Question

About 11% of males are left-handed while about 9% of females are left-handed.

d) If three males are selected at random, what is the probability that none of them are left handed?

Answer 1

Here p=0.11 is same for all, n=3 is constant, events are independent and only two outcomes

So all the properties of binomial is satisfied

Hence we will use binomial distribution to find the required probability