- No SPSS/lab instruction for today
- Go to visit http://www.whfreeman.com/ips7e
- Get your notes and z-table prepared.

- Hypothesis: vs (1-sided/2-sided)
- Test statistic: choose a proper test statistic and calculate
- P-value: get your p-value from tables(e.g. z-table), and compare with
- Conclusion: When , we
**reject**null hypothesis; if not, we**cannot reject**null hypothesis. Never say*accept*or*prove*. Then draw concusion include the word**population**.