I need help solving this problem.

Television viewing reached a new high when the global information and measurement company reported a mean daily viewing time of 8.35 hours per household. Use a normal probability distribution with a standard deviation of 2.5 hours to answer the following questions about daily television viewing per household. 3. What is the probability that a household views television between 5 and 8 hours a day (to 4 decimals)? b. How many hours of television viewing must a household have in order to be in the top 3% of all television viewing households (to 2 decimals)? hOUI'S c. What is the probability that a household views television more than 2 hours a day (to 4 decimals)