Television viewing reached a new high when the Nielsen Company reported a mean daily
viewing time of 8.35 hours per household $(U S A$ Today, November $11,2009) .$ Use a normal probability distribution with a standard deviation of 2.5 hours to answer to answer the following
questions about daily television viewing per household.
a. What is the probability that a household views television between 5 and 10 hours
a day?
b. How many hours of television viewing must a household have in order to be in the
top 3$\%$ of all television viewing households?
c. What is the probability that a household views television more than 3 hours a day?