3 according to the new york times 53 of all persons in the u s populat

Question

3 According to the New York Times, 53% of all persons in the U.S. population have at least
some college education. If 20 persons are selected at random, find the probability that:
a) Half of them have some college education
b) At least 5 do not have any college education
c) Fewer than 7 have some college education
4 According to Police records in a large metropolitan city, accidents occur at a rate of 2 per
hour. The number of car accidents follows a Poisson distribution. Find the probability that:
a) There are no accidents in 1 hour
b) There are more than 5 accidents in 3 hours
c) There are fewer than 3 accidents in 2 hours.
d)