MDM4U U2A2 Formative Assessment 1. A bag of marbles contains seven whites, five blacks, and eight reds. Determine the probability of: a) picking a white marble b) picking a marble that is not black 2. When a die was rolled 20 times, "4" came up five times. a) Determine the experimental probability of rolling a "4". b) Determine the theoretical probability of rolling a "4". c) How can you account for the difference between the results? 3. Estimate the subjective probability of the following. Explain your answers. a) All classes being cancelled next week. b) At least one severe snow storm will occur in your area next winter