A number of Investigations have focused on the problem of assessing loads that can be manually handled in a safe manner. A particular article proposed using 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+.90+.08.2-4.50x3+e (a) What is the mean value of rating of acceptable load when extent of left lateral bending is 25 cm, dynamic hand grip endurance is 190 sec, and trunk extension ratio is 10 N/kg? (b) If repeated observations on rating are made on different individuals, all of whom have the values of x1, x2, and X3 specified in Part (a), in the long run approximately what proportion of ratings will be between 10.7 kg and 34.7 kg? (Use Table 2 in Appendix A. Round your answer to four decimal places.)

A number of Investigations have focused on the problem of assessing loads that can be manually handled in a safe manner. A particular article proposed using 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+.90+.08.2-4.50x3+e (a) What is the mean value of rating of acceptable load when extent of left lateral bending is 25 cm, dynamic hand grip endurance is 190 sec, and trunk extension ratio is 10 N/kg? (b) If repeated observations on rating are made on different individuals, all of whom have the values of x1, x2, and X3 specified in Part (a), in the long run approximately what proportion of ratings will be between 10.7 kg and 34.7 kg? (Use Table 2 in Appendix A. Round your answer to four decimal places.)

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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