At the end of 2011, Wilson Company implemented a new labor process and redesigned its product with the expectation that input usage efficiency would increase.Now, at the end of 2012, the president of the company wants an assessment of the changes on the company's productivity.The data needed for the assessment are as follows:
Required:
Definitions:
Effect Size
A quantitative measure of the magnitude of the experimental effect from a study.
Standard Error of Mean
The estimation of the standard deviation of the sample mean, reflecting the variability of the sample mean from the population mean.
Two-Tailed
Pertaining to tests of statistical significance that consider both directions of deviation from a null hypothesis.
Null Hypothesis
A statistical hypothesis that proposes there is no significant difference or effect and that any observed variation is due to chance.
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