Despite the fact that home prices seem affordable and mortgage rates are at historic lows, real estate agents say they are showing more homes, but not selling more (The Boston Globe, March 7, 2009). A real estate company estimates that an average of five people show up at an open house to view a property. There is going to be an open house on Sunday.

a. What is the probability that at least five people will show up to view the property?

b. What is the probability that fewer than five people will show up to view the property?