Approximately 90% of all people are right handed. Consider a grouping of ten people. Assume the requirements for a binomial distribution have been satisfied. a. What is the probability that 4 of them...

Approximately 90% of all people are right handed. Consider a grouping of ten people. Assume the requirements for a binomial distribution have been satisfied.

a. What is the probability that 4 of them will be right handed?

b. What is the probability that at least 3 of them will be right handed?