The Downtown Parking Authority of Tampa, Florida, reported the following information for a sample of 250 customers on the number of hours cars are parked. Number of Hours 1 2 3 4 Frequency 20 49 75 45 40 13 5 3 250 5 6 7 8 Click here for the Excel Data File a-1. Convert the information on the number of hours parked to a probability distribution. (Round your answers to 3 decimal places.) Number of Hours 1 Frequency Pr(x) 20 2 49 3 75 4 45 5 40 6 13 7 5 8 3 a-2. Is this a discrete or a continuous probability distribution? O Discrete O Continuous b-1. Find the mean and the standard deviation of the number of hours parked. (Do not round the intermediate calculations. Round your final answers to 2 decimal places.) Mean Standard deviation b-2. How long is a typical customer parked? (Do not round the intermediate calculations. Round your final answer to 2 decimal places.) The typical customer is parked for hours c. What is the probability that a car would be parked for more than 6 hours? What is the probability that a car would be parked for 3 hours or less? (Round your answers to 3 decimal places.) P(time parked 6 hours) P(time parked s 3 hours)