Question 32 (1 point) Saved Looking at the data points, estimate the correlation coefficient T between the two variables? -0.0032 0.018 O-0.32 O0.55 O 0.98 204.76 Question 33 (1 point) Saved Suppose you wanted to test for an association between these two variables. Which of the following tests would be appropriate? Logistic regression Contingency analysis .Linear regression Ox goodness-of -fit test Two-sample t-test Analysis of variance (ANOVA)Cocaine is thought to affect the brain by blocking the dopamine transporter, increasing the amount of dopamine in the nerve synapse. To investigate this idea, Volkow et al. (1997) administered intravenous doses of 0.3 to 0.6 mg/kg of cocaine to volunteers. They used PET scans to compare the magnitude of the perceived "high" of regular cocaine users with the percentage of dopamine receptors blocked. The results for 34 subjects are illustrated below. 10- 8 6 Rating of high 4 2 30 40 50 60 70 80 90 Dopamine transporters blocked (%)Question 34 (1 point) Estimate the slope of a regression line drawn through the points. Which number would it be closest too? 0.05 0.167 O0.6 O1 0 6