Business, 08.02.2021 18:50, dustysorrells74

A company is producing christmas light strings containing 20 small bulbs. Suppose the success or failure of a bulb is independent of the success or failure of other bulbs and the probability that a bulb is lightning properly is 0.92. a. When you order a christmas light string, what is the probability of at most 3 of those small bulbs are not lightning properly.
b. Find the mean and the variance of bulbs in a string that are not lightning properly.

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A company is producing christmas light strings containing 20 small bulbs. Suppose the success or fai...