Spreadsheet Modeling & Decision Analysis: A Practical Introduction To Business Analytics, Loose-leaf Version
Spreadsheet Modeling & Decision Analysis: A Practical Introduction To Business Analytics, Loose-leaf Version
8th Edition
ISBN: 9781337274852
Author: Ragsdale, Cliff
Publisher: South-Western College Pub
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The number of hybrid cars that have be requested for rental from a car rental office during a 50 day sample period is given in the following table.       Demand for Cars      Number of Days     Probability                  3                          3                    0.06                  4                          7                    0.14                  5                        12                    0.24                  6                        14                    0.28                  7                        10                    0.20                  8                          4                    0.08                                            50                    1.00What is the expected (mean) number of hybrid rentals per day?  Compute to one decimal place.
The operations manager for a water taxi company wants to decide whether to purchase a small, medium, or large new boat for the company. The manager estimates that the annual profits (in thousands of dollars) will vary depending upon whether passenger demand is low, moderate, or high, as shown in the following table. ооо Boat none Small Medium Low Medium 49 38 Large Probability 0.3 Demand 21 60 82 53 0.3 High 68 90 118 If the company uses the expected value approach, which size boat will it decide to purchase? small medium large 0.4
4. Vacation Inns is a chain of hotels operating in the southwestern part of the United States. The company uses a toll-free telephone number to make reservations for any of its hotels. The average time to handle each call is 3 minutes, and an average of 12 calls are received per hour. The probability distribution that describes the arrivals is unknown. Over a period of time it is determined that the average caller spends 6 minutes either on hold or receiving service. Find the average time in the queue, the average time in the system, the average number in the queue, and the average number in the system.
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