Define each of the following:

1. Null hypothesis
2. Alternative hypothesis
3. Type I error
4. Type II error

1. Dr. Gutirrez is interested in whether emotionally positive or negative stimuli produce different levels of activation in an area of the brain known as the hippocampus. Translate this research question into a null hypothesis and alternative hypothesis in words.

1. Dr. Jackson is interested in whether psychology majors have higher reading comprehension skills than the general population. Translate this research question into a null hypothesis and alternative hypothesis in words.

1. What is the relationship between alpha and the probability of a Type I error. What is the reason for this relationship?