Question: Imperfections in computer circuit boards and computer chips lend themselves to statistical treatment. For a particular type of board the probability of a diode failure

Imperfections in computer circuit boards and computer chips lend themselves to statistical treatment. For a particular type of board the probability of a diode failure is 0.03. Suppose a circuit board contains 200 diodes.

(a) What is the mean number of failures among the diodes?

(b) What is the variance?

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