C o n sid er th e fo llo w in g s a m p le data:

x 22 24 27 21 23 14 14 15 y

101 139 250 88 87 14 16 20

a. C onstruct a scatterp lot and verify th a t e stim atin g a sim p le linear regression is a p p ro p ria te in this p ro b le m .

b. Calculate b 0 and b1. W h a t is th e s am p le regression equation?

c. Find th e predicted value f o r y if x equ als 2 0 ,1 0 0 , and 200. P-69