\(\bar{Y}=\frac{1169}{10}\) = 116.9

Regression equation of Y on X

**Y - ****\(\bar{Y}=b_{yx}(X-\bar{X})\)**

Y – 117 = 2.3479 (X – 65.2)

Y – 117 = 2.3479X – (2.3479)(65.2)

Y = 2.3479X – 153.08308 + 117

Y = 2.3479 – 36.08308

When the height X = 69 inches

**Weight, Y = 2.3479(69) – 36.08308 **

= 162.0051 – 36.08308

= 125.92202

**= 125.92 lb**