# Probability of Two Independent Alternators will Fail

What are the steps to show the probability that a given alternator will fail on a 1-hour flight is .02?

What is the probability that (a) two independent alternators will fail?

(b) Neither will fail?

(c) One or the other will fail?

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#### Solution Preview

Let p be the probability that a given alternator fails. Then p = 0.02.

a) The probability that both fails is p * p = 0.02 * 0.02 = ...

#### Solution Summary

The expert determines the probability that either two independent alternators will fail or not.

$2.19