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A population mean is 13 the sample mean is 128 and the

Question: 1. Which distribution do you use when the standard deviation is not known and you are testing one population mean? Assume sample size is large.

2. A population mean is 13. The sample mean is 12.8, and the sample standard deviation is two. The sample size is 20. What distribution should you use to perform a hypothesis test? Assume the underlying population is normal.

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Basic Statistics: A population mean is 13 the sample mean is 128 and the

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Basic Statistics: A population mean is 13 the sample mean is 128 and the

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