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The delivery times for a distributing site are normally distributed with an unknown population mean and...

The delivery times for a distributing site are normally distributed with an unknown population mean and standard deviation. If a random sample of 25 deliveries is taken to estimate the mean delivery time, what t-score should be used to find a 98% confidence interval estimate for the population mean? df t0.10 t0.05 t0.025 t0.01 t0.005 ... … … … … … 21 1.323 1.721 2.080 2.518 2.831 22 1.321 1.717 2.074 2.508 2.819 23 1.319 1.714 2.069 2.500 2.807 24 1.318 1.711 2.064 2.492 2.797 25 1.316 1.708 2.060 2.485 2.787 Use the portion of the table above or a calculator. If you use a calculator, round your answer to three decimal places.

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orchestra answered 2 years ago
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