For an aircraft system, a component failure was adjudged to be exponentially distributed with a hazard rate of 0.0008 per hour. The system is immediately replaced upon failure with a spare part pulled from inventory. As a reliability professional working for this aircraft company, you have recommended that all parts be bought now with the knowledge that the manufacturer of these parts will be going out of the market. The system is designed to be used 3 hours a day for 2 full years. What is your take on the number of pare components that must be purchased to have a 95% reliability in a bid to prevent stock out leading to a failure