Question: 1. A product is made up of 20 components in a series. Ten of the components have a 1>10,000 chance of failure. Five have a 3>10,000 chance of failure. Four have a 4>10,000 chance of failure. One component has a 1>100 chance of failure. What is the overall reliability for this product?
2. For the product in if parallel components are used for any component with worse than a 1>1,000 chance of failure, what is the overall reliability? How many components will the new design have? What will be the average component reliability for the redesigned product?