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nramos08 nramos08
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Posts: 715
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6 years ago
A component must have reliability of .9925. Two technologies are available for this component: one produces a component with .999 reliability at a cost of 2000. Another produces a component with .73 reliability at a cost of 450.
 
  Which is cheaper: one high quality component or a parallel set of inferior components? (Hint: for the inferior components, you first need to determine the number of them that would be needed to ensure overall reliability of .9925.)
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wrote...
6 years ago
First, determine how many of the 0.73 reliable components are needed: 2: 0.9271 3: 0.980317 4: 0.994686 Four are needed, which will cost 1800. This is cheaper than the 2000 single high-quality component.
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