Question

In: Statistics and Probability

You start a job on a Fabrication line for silicon based devices. To validate that your...

You start a job on a Fabrication line for silicon based devices. To validate that your fab process is working, you inspect for defective wafers. Suppose that in a tray containing 20 wafers pulled off the line, four are defective based on your line statistics. Suppose that you pull two wafers from this tray for analysis. Find the probability of the following:

a) Neither wafer is defective.

b) At least one of the wafers is defective.

c) Neither is defective, give that at least one is not defective.

d) Both are defective.

e) The second is defective given that the first is good.

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