Question

e d the best predicted systok bed below are yolc blood pressure modern in Hg) obtained from the same womand the regresonation, letting the right armblood pressure be the predictor) v blood pressure in the left m en that the systolic blood prest in the arms Use a significance level of 0 05 Right Arm 103 102 35 B0 8 15 Lelt Am 175 169 147 147 148 HP Click the icon to view the critical values of the Pearson correlation coeficient The regression equation is (Round to one decimal place as needed) m othe best predicted systolic blood pressure the lowmmmHg Given that the systolic blood pressure in the right armis (Round to one decimal place as needed)

Answer 1

Solution:

X	Y	XY	X^2	Y^2
103	175	18025	10609	30625
102	169	17238	10404	28561
95	147	13965	9025	21609
80	147	11760	6400	21609
81	148	11988	6561	21904

n	5
sum(XY)	72976.00
sum(X)	461.00
sum(Y)	786.00
sum(X^2)	42999.00
sum(Y^2)	124308.00

b = ΠΣxy - (Σx)(ΣΥ) ΠΣχ2 - (Σx)2

b = 1.0

a = Σy - bΣx

a = 62.8

The regression equation is

$\hat y$ = a + bx

$\hat y$ = 62.8 + 1.0 x