Find the area to the left of critical value = 2.500 when the sample size is 29. [Hint: One-tailed test]
Given sample size = 29, degrees of freedom = n-1= 29-1=28 Looking at t table,
The critical value:
t.99=2.500t_{.99}=2.500t.99=2.500
So, the area to the left of critical value=99%