Two samples one of size 14 and the second of size 13 are sel

Two samples, one of size 14 and the second of size 13, are selected to test the difference between two population means. Howmany degrees of freedom are used to find the critical value? Assume the population standard deviations are equal.

Note that the pooled df is

df = n1 + n2 - 2 = 13 + 14 - 2