Which of the following is true of the degrees of freedom,k, if you find them by taking the smaller of n₁- 1 and n₂- 1 when n₁ n₂?

1. When you use this estimate fork, you're less likely to reject a false null hypothesis.

2. This method for estimatingkgives a relatively high power of the test.

3. This is the same statistic you'd get if you used software to calculate degrees of freedom.

4. When using this conservative estimatek, you're less likely to reject a true null hypothesis.

5. It's a liberal estimate that gives relatively smallP-value when the sample sizes are different.