Explain why the following statements are not correct.

a. "With my methodological approach, I can reduce the Type I error with the given sample information without changing the Type II error."

b. "I have already decided how much of the Type I error I am going to allow. A bigger sample will not change either the Type I or Type II errors."

c. "I can reduce the Type II error by making it difficult to reject the null hypothesis."

d. "By making it easy to reject the null hypothesis, I am reducing the Type I error."