True/False
1- In stepwise multiple regression, the attempt to find additional predictor variables is stopped once a predictor variable fails to make a statistically significant contribution to the regression analysis.
2- In simultaneous multiple regression, the order in which variables are entered is very important.
3- Random sampling of participants is not possible in survey research design
4- Directional hypothesis are most effectively tested with a two-tailed rather than a one-tailed research test.
5- Single-subject research studies typically do not employ inferential statistics.