According to the Census Bureau, 33.4% of Americans 25 years old and older had a college degree (at least a bachelor’s) in 2016. 

a. If a random sample of 6 American 25 years old and older is taken, what is the probability that exactly 3 have a college degree? 

b. If a random sample of 6 Americans is taken, what is the probability that fewer than 2 have a college degree? 

c. If a random sample of 6 Americans is taken, what is the probability that at least 1 of them has a college degree? 

d. If you take a random sample of 6 Americans on a certain street in a certain town, will the probabilities you calculated in parts (a)–(d) be the same as the probabilities for this group? Explain.