7.32 When parking a car in a downtown parking lot, drivers pay according to the number of hours or parts thereof. The probability distribution of the number of hours cars are parked has been estimated as follows. x 1 2 3 4 5 6 7 8 P(x) .24 .18 .13 .10 .07 .04 .04 .20 Find the mean and standard deviation of the number of hours cars are parked in the lot. 7.33 Refer to Exercise 7.32. The cost of parking is $2.50 per hour. Calculate the mean and standard deviation of the amount of revenue each car generates.
Added by Marvin M.
Step 1
Given the probability distribution: x: 1 2 3 4 5 6 7 8 P(x): .24 .18 .13 .10 .07 .04 .04 .20 Mean = (1 * 0.24) + (2 * 0.18) + (3 * 0.13) + (4 * 0.10) + (5 * 0.07) + (6 * 0.04) + (7 * 0.04) + (8 * 0.20) Mean = 0.24 + 0.36 + 0.39 + 0.40 + 0.35 + 0.24 + 0.28 + Show more…
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When parking a car in a downtown parking lot, drivers pay according to the number of hours or fraction thereof. The probability distribution of the number of hours cars are parked has been estimated as follows: X 1 2 3 4 5 6 7 8 P(X) 0.231 0.13 0.112 0.098 0.07 0.028 0.02 0.311 A. Mean = B. Standard Deviation= The cost of parking is 2.5 dollars per hour. Calculate the mean and standard deviation of the amount of revenue each car generates. C. Mean = D. Standard Deviation =
David N.
2. When parking a car in a downtown parking lot, drivers pay according to the number of hours or parts thereof. The probability distribution of the number of hours that cars are parked has been estimated as follows: X 1 2 3 4 5 6 7 8 P(X) .24 .18 .13 .10 .07 .04 .04 .20 a. Find the mean and standard deviation of the number of hours that cars are parked in the lot. b. If the cost of parking is $2.50 per hour, calculate the mean and standard deviation of the amount of revenue each car generates.
Qudsiya A.
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 and the amount they are charged. a. Convert the information on the number of hours parked to a probability distribution. Is this a discrete or a continuous probability distribution? b. Find the mean and the standard deviation of the number of hours parked. How Iong is a typical customer parked? c. Find the mean and the standard deviation of the amount charged.
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