6. Dr. Hafen is doing research on the effects of study time (how many minutes students study) on test performance (their score on an exam). He hypothesizes that the amount of study time will impact an individual's performance on the exam. Then Dr. Hafen collects data on 100 students and runs a Pearson correlation. a) In your own words, please describe Dr. Hafen's Null Hypothesis. b) If Dr. Hafen makes a Type I error, what would that mean in the context of the study? c) If Dr. Hafen makes a Type II error, what would that mean in the context of the study?