The Eco Pulse survey from the marketing communications firm Shelton Group asked individuals to indicate things they do that make them feel guilty (Los Angeles Times, August

,

). Based on the survey results, there is a

probability that a randomly selected person will feel guilty about wasting food and a

probability that a randomly selected person will feel guilty about leaving lights on when not in a room. Moreover, there is a

probability that a randomly selected person will feel guilty for both of these reasons.
a. What is the probability that a randomly selected person will feel guilty for either wasting food or leaving lights on when not in a room or both (to

decimals)?

b. What is the probability that a randomly selected person will not feel guilty for either of these reasons (to

decimals)?