For each part below, write down H0 and H1. Point out if it is a lower tail one-sided test, an upper tail one-sided test, or a two sided test. Also, say if it is mean or proportion.
1. Is the yield (% of products that are acceptable) of process A better than 92%?
2. Is the mean GPA of undergraduate students greater than 3.0?
3. Of American citizens age 21 or older, is the percent that would like a federal program repealed greater than 50%?