A test is made ofH0:p= 0.15 versusH1:p< 0.15. The true value ofpis 0.15, andH0is rejected.

Does the conclusion result in a Type I error, a Type II error, or a correct decision?

Answer options:

1. correct decision
2. Type I error
3. Type II error
4. it depends - sometimes Type I error and sometimes Type II error.