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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

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 designatedY.

Thirty employees were selected at random. Data were collected for each, and their performances on the new machines were recorded. A few results are:

Name Performance on New Machine, Y Length of Time in Industry, X1 Mechanical Aptitude Score, X2 Prior on-the-Job Performance, X3 Age, X4
Mike Miraglia 118 5 365 130 41
Sue Trythall 120 9 342 116 25

The equation is:

= 10.9 + 0.2X1+ 0.686X2+ 0.612X3+ 0.008X4

a. What is this equation called?
(Click to select)Multiple regression equationMultiple standard error of estimateCoefficient of determination

b. How many dependent and independent variables are there?
(Click to select)OneTwoThreeFourFivedependent,(Click to select)OneTwoThreeFourFiveindependent

c. What is the number 0.612 called?
(Click to select)Regression coefficientCoefficient of determinationHomoscedasticityMulticollinearity

d.

As age increases by one year, how much does estimated performance on the new machine increase?(Round your answer to 3 decimal places.)

e.

Carl Knox applied for a job at Photo Works. He has been in the business for 9 years and scored 205 on the mechanical aptitude test. Carls prior on-the-job performance rating is 85, and he is 27 years old. Estimate Carls performance on the new machine.(Round your answer to 3 decimal places.)

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