SOLUTION: 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

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.
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.)
b) What other assumptions are necessary in (a)?
c) Repeat (a) assuming that the population variances are not equal
d) Compare the results of (a) and (c)
e) Assuming equal variances construct and interpret a 95% confidence interval estimate of the difference between the population means of the two training methods.

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Data was not posted.
Cheers,
Stan H.
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