In hypothesis testing, if I keep n fixed and decrease the significance level , what happens to the Type I and Type II error probabilities?

In hypothesis testing, if I keep n fixed and decrease the significance level , what

happens to the Type I and Type II error probabilities? If I keep alpha fixed and increase

sample size n, what happens to the Type I and Type II error probabilities? In order to

make both Type I AND Type II error decrease, what should we do?

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