autumnellen9798 autumnellen9798

24-04-2018
Mathematics

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Form a normally distributed population, a simple random sample of size 30 is taken. the mean of the sample is 144 and the standard deviation of the sample is 12. which interval is the 90% confidence interval for the population mean?

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19holtzendorf 19holtzendorf

24-04-2018

The answer I think is D.

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