Get solution: Section I: Multiple Choice Select the best answer for each question

QUESTION:

Section I: Multiple Choice Select the best answer for each question. Questions T6.1 to T6.3 refer to the following setting. A psychologist studied the number of puzzles that subjects were able to solve in a five-minute period while listening to soothing music. Let X be the number of puzzles completed successfully by a randomly chosen subject. The psychologist found that X had the following probability distribution: Value: 1 2 3 4 Probability: 0.2 0.4 0.3 0.1 What is the probability that a randomly chosen subject completes more than the expected number of puzzles in the five-minute period while listening to soothing music? (a) 0.1 (b) 0.4 (c) 0.8 (d) 1 (e) Cannot be determined