Question: Suppose that a primary device has failed as a result of a high temperature environment. The probability that an electronic switch will successfully activate a

Suppose that a primary device has failed as a result of a high temperature environment. The probability that an electronic switch will successfully activate a backup device is 0.6. If switch failures are statistically independent and the switches are tried one at a time, how many parallel switches are required to achieve at least 95% probability of successful switching?

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