The equation yˆ=1.2676x+79.6645 models Fred's systolic blood pressure, in mm/HG, over his life span, where x is Fred's age. According to the regression equation, what is the approximate systolic blood pressure of Fred at the age of 55?

The equation that models Fred's systolic blood pressure is:

y = 1.2676 * x + 79.6645

x = 55 (the age of 55)

y = 1.2676 * 55 + 79.6645 =

= 69.718 + 79.6645 =

= 149.3825

Answer:

The approximate systolic blood pressure of Fred at the age of 55 is 149.3825 mm/HG.