James Burke claims that about 70% of all single men would welcome a women taking the initiative in asking for a date. A random sample of 20 single men were asked if they would welcome a women taking the initiative in asking for a date. What is the probability that come a women taking the initiative in asking for a date. What is the probability that:
a. at least 18 of the men will say yes?
b. fewer than 3 of the men will say yes?
c. none of the men will say yes?
d. at least 5 of the men will say no?