Question

Listed below are systolic blood pressure measurements​ (in mm​ Hg) obtained from the same woman. Find the regression​ equation, letting the right arm blood pressure be the predictor​ (x) variable. Find the best predicted systolic blood pressure in the left arm given that the systolic blood pressure in the right arm is 85 mm Hg. Use a significance level of 0.05.

Right Arm	103	102	95	75	74
Left Arm	174	167	151	148	148

The regression equation is y=92.8p+0.7x.

​(Round to one decimal place as​ needed.)

Given that the systolic blood pressure in the right arm is 85mm​ Hg, the best predicted systolic blood pressure in the left arm is _______

​(Round to one decimal place as​ needed.)

Answer 1

The statistical software output for this problem is:

p - Value for slope = 0.066

This p - value is greater than 0.05 so we do not reject the null hypothesis. Hence,

Best predicted left arm blood pressure

= Average of all y values

= (174 + 167 + 151 + 148 + 148)/5

= 788/5

= 157.6