In the following scenario, what is the correct estimate for the number of units

Question

In the following scenario, what is the correct estimate for the number of units of work completed by a worker with a manual dexterity score of 100, a mental aptitude score of 80 and a personnel assessment score of 107 The personnel department of a large manufacturing firm selected a random sample of 23 workers. The workers were interviewed and given several tests. On the basis of the test results, the following variables were investigated: x2 manual dexterity score x3 mental aptitude score, and X4 personnel assessment score. Subsequently, the workers were observed in order to determine the average number of units of work completed (Y) in a given time period for each worker. Regression analysis yielded these results: Y--212 + 1.90X2 + 2.00X3 + 0.25X4, R2-.75. (.050) (.060).20) The quantities in parentheses are the standard errors of the regression coefficients. The standard error of the regression is 25, and the standard deviation of the dependent variable is so. O 1) 140.5 2) 154.3 O 3) loss 4) 138.0 O 5) 150.0

Explanation / Answer

from abvoe regression equation:

estimated number of units of work completed =-212+1.90*100+2.00*80+0.25*10=140.50

option 1 is correct

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