Question: A researcher conducted a one-sample t-test which compared the average heart rate in the general population ( = 85) to a sample of 25 professional

A researcher conducted a one-sample t-test which compared the average heart rate in the general population ( = 85) to a sample of 25 professional athletes (= 82, S =1.5), and rejected the null hypothesis that there was no difference in heart rate for the two populations.

What is the correct tcritical value to use in computing the 95% confidence interval using the data above?

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