According to a national study, students spend an average of $100 a month on public transit with a population standard deviation of $20. You believe students in your school spend more on public transit than the national average. You took a random sample of 64 students and the sample spent an average of $104. Test the hypothesis at 1% significance level.

1. The appropriate tail test is

2. The critical value is

3. The test value is

4. The p value is