Subject: Telecommunication system statistics
Details: A unit for a telecommmunication system is to be designed so that the probability that it fails during a period of five years does not exceed 0.4. the unit is to be made up of (n) effectively identical componants each with an exponential failure distribution and a hazard rate of 2.5x(10 to power -7) per hour. the unit fails if any one of its (n) componants fails. estimate the maximum number of componants that can be used in one unit