WEEK\": 1. If the correlation between two variables X and Y is r = -.50, what is the value of R2? R2 = .50 R2 : .25 R2 = -.25 R2 = .50 2. In a normal distribution, if a person has a z-score = -1.03, what is their percentile rank? 3. In a normal distribution, what is the z-score cutoff for the highest 33%? 4. In a normal distribution, what percentage of z-scores are between 2 = -1.25 and z = +1.25? 5. In a normal distribution, what percentage of z-scores are more extreme than (outside of) z = -2.50 and z = +2.50? 6. In a normal distribution, what are the + and - z-score cutoffs separating the middle 95% from the extreme 5%? 7. Suppose that for diastolic (lower) blood pressure readings, the mean is 69.3mmHg and the standard deviation is 13.1, with a normal distribution. What percentage of people in this population are have a pressure reading greater than 94? 8. Suppose that for diastolic (lower) blood pressure readings, the mean is 69.3mmHg and the standard deviation is 13.1, with a normal distribution. You want to nd the cutoff for the 5% highest readings. What is the cutoff in mmHgZ