Contented Airlines (CA) is reluctant to begin service at the new Delayed Indefinitely Airport (DIA) until the automated baggage-handling system can transport luggage to the correct location with at least 99 percent reliability for any given flight. Lower reliability will result in damage to CA's reputation for quality service. The baggage system will not deliver to the right location if any of its subsystems fail. The subsystems and their reliability for satisfactory performance during operation for any given flight are shown in the following table.

a. What is the reliability of the luggage system for any given flight?
b. When the passenger shuttle system operates, power surges trip the motors on the baggage system. Each of the luggage system motors must then be manually reset. Installing surge protectors increases power supply reliability to 99.9 percent. What is the reliability of the luggage system?
c. What could be done to improve the reliability of the luggage system?

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SUBSYSTEM Power supply Scanner reading RELIABILITY 70.0% surge-free 99.8% accurate Computer software 98.2% glitch-free Mechanical systems 97.5% jam-free Operators 96.0% error-free