Statistics hw

QUESTION 4 ***You have two variables (for each, n = 13) that have a correlation coefficient r = 0.86. Is the correlation between these variables significantly different from the population correlation coefficient p = 0.5? (choose the most precise response) O a. P P > 0.01 (different) O C. P > 0.05 (not different) O d. not enough information to determine QUESTION 5 Table 5. Regression table with tree girths in inches as the independent variable (diameter at 4.5 feet) and tree heights in feet as the dependent variable for 31 Black Cherry Trees: X Y SX SY Exy b a 13.25 76 3.14 6.37 311.5 295.44 1.054 62.03 30.7 ***Consider Table 5. What is the standard error of the intercept? O a. 1.0 O b. 1.5 O C. 13.3 O d. 4.4