If an experiment is conducted with 5 conditions and 6 subjects in each condition, what are dfn and dfe?

There are 5 conditions which is denoted by K and 6 subjects which makes the population size as N = 5 * 6 = 30

Degrees of freedom which is denoted by dfn, it is the number of independent pieces of info on which the estimation is centered.

It is solved by: Degrees of freedom (dfn) = N - 130 - 1 = 29.

Where N here is the population size.

While the error degrees of freedom (dfe) is computed by = N - K 30-5 = 25.