value: 20.00 points Thompson Photo Works purchased several new, highly sophistic

Question

value: 20.00 points Thompson Photo Works purchased several new, highly sophisticated processing machines. The production department needed some guidance with respect to qualifications needed by an operator. Is age a factor? Is the length of service as an operator (in years) important? In order to explore further the factors needed to estimate performance on the new processing machines, four variables were listed x1- Length of time an employee was in the industry X2 = Mechanical aptitude test score X3 Prior on-the-job rating X4 = Age Performance on the new machine is designated Y Thirty employees were selected at random. Data were collected for each, and their performances on the new machines were recorded. A few results are Performance Length of Mechanical Prior on New Time in Aptitude on-the-Job Machine. Industry, Score, Performance, Age Name Mike Miraglia Sue Trythall 110 119 129 43 21 12 375 366 The equation is Y 10.2 0.3x1+0.886X2+0.912X30.004X4

Explanation / Answer

a. The regression equation is multiple regression equation.

b. Dependent variable-performance on new machine and independnet variables-leangth of time in industry, mechanical aptitude score, prior on job performance and age.

c 0.912 is regression coefficienct corresponding to mechanical aptitude score.

d. 10.204 (substitute 1 in X4 and keep other variables constant, and then add intercept and 0.004).

e. Performance on new machine is as follows:

y=10.2+0.3*5+0.886*275+0.912*65+0.004*26=314.734

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