Question

x 2 5 11 16 26 36 y 42 52 79 100 150 200 Σx =...

x 2 5 11 16 26 36
y 42 52 79 100 150 200

Σx = 96

Σy = 623

Σx2 = 2378

. Σy2 = 83209

Σxy =13913

r = .999

(c) Find x, and y. Then find the equation of the least-squares line y hat = a + bx. (Round your answers for x and y to two decimal places. Round your answers for a and b to three decimal places.) x = y = y hat =

(d) The calves you want to buy are 14 weeks old. What does the least-squares line predict for a healthy weight? (Round your answer to two decimal places.)

________kg

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