document.write( "Question 206877: The director of training for an electronic equipment manufacturer is interested in determining whether different training methods have an effect on the productivity of the assembly-line employees. She randomly assigns 42 recently hired employees into two groups of 21. The first group receives a computer-assisted, Individual-based training program and the other receives a team-based training program. Upon completion of the training, the employees are evaluated on the time (in seconds) it takes to assemble a part. The results are in the data file training.
\n" ); document.write( "a) Assuming that the variances in the populations of training methods are equal, is there evidence of a difference between the mean assembly times (in seconds) of employees trained in a computer-assisted, individual-based program and those trained in a team-based program? (Use a 0.05 level of significance.)
\n" ); document.write( "b) What other assumptions are necessary in (a)?
\n" ); document.write( "c) Repeat (a) assuming that the population variances are not equal
\n" ); document.write( "d) Compare the results of (a) and (c)
\n" ); document.write( "e) Assuming equal variances construct and interpret a 95% confidence interval estimate of the difference between the population means of the two training methods.
\n" ); document.write( " \n" ); document.write( "

Algebra.Com's Answer #156392 by stanbon(75887) $\"\"$ $\"About$

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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "

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