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A customer service phone line claims that the wait times before a call is answered by...

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Basic Math

A customer service phone line claims that the wait times beforea call is answered by a service representative is less than 3.3minutes. In a random sample of 62 calls, the average wait timebefore a representative answers is 3.24 minutes. The populationstandard deviation is assumed to be 0.40 minutes. Can the claim besupported at ?=0.08?

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