Thirty percent of employees at the Conroy Insurance Comapny travel to work on the bus and will arrive at work hours late whenever the bus system fails. a sudden snow storm has shut down all bus service in the city. Suppose that the accounting department contains 10 people. assuming independence of riders, find the probability of the following in the accounting department:
a. at least two people are late
b. fewer than five people are late
c. no one is late