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Chapter 6: Probability 1. A jar contains 20 red marbles, of which 10 are large and 10 are small, and 30 blue all of which 10 are large and 20 are small. If 1 marble is randomly selected from the jar. a. What is the probability of obtaining a blue marble? b. What is the probability of obtaining a large marble? c. What is the probability of obtaining a large a blue marble? 2. Information from the Department of Motor Vehicles indicates that the average age of licensed drivers is u = 39.7 years with a standard deviation of o = 12.5 years. Assuming the distribution of drivers' ages is approximately normal