Twenty percent of all telephones of a certain type are submitted for service while under warranty....

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Twenty percent of all telephones of a certain type are submitted for service while under warranty....

Twenty percent of all telephones of a certain type are submitted for service while under warranty. Of these, 60% can be repaired, whereas the other 40% must be replaced with new units. If a company purchases ten of these telephones:

What's the probability that at least 6 will end up being repaired under warranty?

math Statistics-And-Probability

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Twenty percent of all telephones of a certain type are submitted for service while under warranty....

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