An electronics manufacturer produces a variety of diodes. Quality control engineers attempt to insure that faulty diodes will be detected in the factory before they are shipped . It is estimated that 0.3% of the diodes produced will be faulty . It is possible to test each diode individually. It is also possible to place a number of diodes in series and test the entire group . If this test fails , it means that one or more of the diodes in that group are faulty. The estimated testing cost is 5 cents for a single diode, and 4+n cents for a group of n >1 diodes . If a group test fails, then each diode in the group must be retested individually to find the bade one(s). Find the most cost-effective quality control procedure for the detecting bad diodes .
[s:11][s:11][s:11]
