Question: A t test for a mean uses a sample of 15 observations. Find the t test statistic value that has a P-value of 0.05 when

A t test for a mean uses a sample of 15 observations. Find the t test statistic value that has a P-value of 0.05 when the alternative hypothesis is 

a) Ha: μ ≠ 0, 

b) Ha: μ > 0, 

c) Ha: μ < 0.
Among others, you can use the t Distribution web app to find the answer.

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