Hypothesis tests What do they evaluate? T-tests & ANOVAs What is a null hypothesis? What is an alternative hypothesis? How do you determine if there is statistical significance? How do you measure the magnitude of the treatment effect? Name two ways the estimated standard error may be computed. An independent-measures research design is also known as... A repeated-measures design is also known as... What does the standard error measure? How is the alpha level related to the null hypothesis? What is the critical region? What is statistical power? What is the percentage of variance? What does it measure? What is a confidence interval? What are two factors that can influence it? What does the numerator and denominator measure in a: Independent t-test, repeated measures t-test, independent measures ANOVA, repeated measures ANOVA . Type I error Type II error What is pooled variance? When is it used? Advantages and disadvantages for all tests. What is counterbalancing? Why is it used?