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Answer on Statistics and Probability Question for nohra

Question #20047
a regression model to relate the following dependent variable (y) to k = 3 independent (predictor) variables.
y = individual's rating of acceptable load (kg)
x1 = extent of left lateral bending (cm)
x2 = dynamic hand grip endurance (sec)
x3 = trunk extension ratio (N/kg)
Suppose that the model equation is the following and that σ = 6.
y = 30 + .90x_1 + .08x_2 - 4.50x_3 + e

(a) What is the mean value of rating of acceptable load when extent of left lateral bending is 40 cm, dynamic hand grip endurance is 230 sec, and trunk extension ratio is 10 N/kg?
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