Using a one-tailed test allows us to increase statistical power over a two-tailed test because it ________.
1) puts the entire alpha into one tail, decreasing the chances of rejecting the null hypothesis.
2) divides the alpha into two tails, which reduces the size of each.
3) puts the entire alpha into one tail, increasing the chances of rejecting the null hypothesis.
4) divides the alpha into two tails but focuses on only one of those tails.