Bearing Data Concentration, Compressive Strength, x y 10.0 25.3 10.0 27.5 10.0 28.6 15.0 29.6 15.0 31.1 15.0 27.8 20.0 31.1 20.0 32.6 20.0 29.7 25.0 31.7 25.0 30.1 25.0 32.4 30.0 29.4 30.0 30.6 30.0 32.8 The accompanying information is a set of coded experimental data on the compressive strength of a particular alloy at various values of the concentration of some additive. Complete parts (a) and (b) below. Click the icon to view the compressive strength data. (a) Estimate the quadratic regression equation Hyx = ß₁ +ß₁×₁ +ß₂ײ². ŷ = + (D) ×₁ + (1) ׳ { (Round the constant to two decimal places as needed. Round all other constants and coefficients to three decimal places as needed.)

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