1. A Type II error is made when

1. we fail to reject the null hypothesis and the null hypothesis is false.
2. we fail to reject the null hypothesis and the null hypothesis is true.
3. we reject the null hypothesis and the null hypothesis is false.
4. we reject the null hypothesis and the null hypothesis is true.

1. A Type I error is made when

A. we fail to reject the null hypothesis and the null hypothesis is false.

B. we fail to reject the null hypothesis and the null hypothesis is true.

C. we reject the null hypothesis and the null hypothesis is false.

D. we reject the null hypothesis and the null hypothesis is true.