According to the U.S. Census Bureau, about 10% of persons between 25 and 29 years old live alone. For a random sample of size n, use the binomial table, or software, to find the probability of
(a) 1 or fewer persons living alone when n = 14.
(b) 2 or more persons living alone when n  =14.
(c) 2 or fewer persons living alone when n = 25.
(d) Find the expected number living alone when n = 14.