AP Statistics Quiz
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INFERENCE FOR QUANTITATIVE DATA: MEANS
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A manager of a call center claims that the mean time customers spend on hold is no more than 3.0 minutes. To check the claim, a random sample of n=55n=55 calls is selected, and the sample mean hold time is xˉ=3.2\bar{x}=3.2 minutes. Which hypotheses are appropriate for a test of the population mean hold time, μ\mu?
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