Question 162401
If you were constructing a 99% confidence interval of the population mean based on a sample of n = 25 where the standard deviation of the sample s = 0.05, the critical value of t will be:
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A 99% confidence interval critical value is same as that for a two-tailed
hypothesis test.  You have n=25 so you have 24 degrees of freedom.
Using your t-chart find the line for df=24 and the column for 1% and 2-tailed:
t = 2.797
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Cheers,
Stan H.