Round answers to 3 decimal places where appropriate. 1. Determine whether each distribution is a probability distribution. Explain why or why not. a. X 4. 7 10 11 12 P(X) 0.2 0 0.6 -0.9 1.1 b. X -1 0 3 8 P(X) 0.5 0.1 0.3 0.1 2. Construct a probability distribution for the data and draw a graph for the distribution. The probabilities of a return on an investment of $5000, $9000, and $11,000 are 1 17 and 1 respectively. e 10' 20' 20