A group of scientists were interested in the relationship between heart rate and blood pressure after the intake of caffeine in a group of 40 healthy males. Post-caffeine consumption, the mean systolic blood pressure measured was 129.1 mmHg with SD of 5.67 mmHg, and the mean heart rate was 78.1 beats per minute (bpm), with SD of 9.33 bpm. A least squares regression line was fitted to the data with the blood pressure as the response variable and the heart rate as the explanatory variable, and the y-intercept was found to be 105.56 mmHg. Find the correlation coefficient representing this relationship. Round final answer to 3 decimal places. Do not round in intermediate steps