The personnel department af a large manufacturing firm selecled a random sample

Question

The personnel department af a large manufacturing firm selecled a random sample of 23 warkers. The wrkers were interviewed and given several tests On the basis of the tel results, the following variables were iestigatedX2anual dexterity scure, X3 mental aptituda score, and X4 = personnel assessment score Subsequently, the workers were observed In order to determine the average number of units of wark completed () in a given time perlod for each worker. Regresslon anelysls ylelded these results Y="212+190X2+200x3 + 0.25x4 Rz-75 (050) (060) (.20) The quantiies in parentheses are the standard e af the regression cofficients. The standard error af the regression is 25, and the staad daviatian of the dependent variable 50 Which varlables are making a signficant contibution to the prediction of units of work completed at the.01 signcance leval (tivo talled)? All three vanables. Manual dexterity and personnel assessment. Manual dexterity and mental aptitude Personnel assessment. None of the variables are statistically significant

Explanation / Answer

As we can see from the output, all the p - values are greater than 0.01 which means that none of the variables are statistically significant.

Hence,

Option E is correct.

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