A study was conducted to investigate the relationship between the weight and diastolic blood pressure of AMerican males between 40 and 50 years of age. The following results were obtained:

Weight, x: 182 169 171 193 185 152 141 199 220
blood pressure, y: 90 81 84 92 88 79 78 90 97

What is the coefficient of correlation for this data?

At the 5% level, is the coefficient of correlation significant?