11. A survey from a marketing communications firm asked individuals to indicate things they do that make them feel guilty. Based on the survey results there is a 0.39 probability that a randomly selected person will feel guilty about wasting food and a 0.27 probability that a randomly selected person will feel guilty about leaving lights on when not in a room. Moreover, there is a 0.12 probability that a randomly selected person will feel guilty for both of these reasons. 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? Answer as a probability to two decimal places.

Answer: __________

12. P(AandB) = 0.4

P(A) = 0.5

P(AUB) = 0.9

P(B)?

Answer:

14. Which of the following is correct. When we do inferential statistics we:

A. Use statistics to make an inference about a parameter

B. Use population-level data to find out more about a sample

C. Don't really care whether the sample is representative of the population because it will all even out in the end. That's the beauty of the Central Limit Theorem.

Select one:

A

B

C