10% of pregnant women deliver prematurely. An obstetrician is seening 16 pregnant women in his next clinic session.
a. what is the probability that none will deliver prematurely?
b. what is the probability fewer than 3 will deliver prematurely?
c. what is the probability that non will deliver prematurely if, in fact the true percentage deliver prematurely is 5.5%
d. if the true percentage is 10% and this obstetrician has 146 pregnant women under his care, how many would be expected to deliver prematurely?