Suppose you are using the sample mean to test the null hypothesis H0: mu <(or equal to) 0 using a once tail T test.
A) if the significance level of your test increases from 0.05 (5 percent) to 0.10 are you more or less likely to reject H0? (draw a picture of the sampling distribution to illustrate your answer)
B) If the sample size increases, will the power of your estimator increase or decrease against the alternative hypothesis HA: mu =3? (draw a picture of the sampling distribution before and after the sample size increases to think about this problem.)