In manufacturing, does worker productivity drop on Friday? In an effort to deter

Question

In manufacturing, does worker productivity drop on Friday? In an effort to determine whether it does, a company's personnel analyst randomly selects a sample of six workers from a manufacturing plant and measures their output on Wednesday. He takes an independent random sample of workers who make the same part and measures their output on Friday. A higher number indicates greater output. Test whether the average output on Friday is the same as the average output on Wednesday. Which Data Analysis tool would you use to perform this test? a ttest: Paired Two Sample for Means D. t-test: Two Sample Assuming Equal Variances c. z-test: Two Sample for Means d. t-test: two Sample Assuming Unequal Variances QUESTION 9 True or False? If Pearson's Coefficient of Skewness is -1.23, the appropriate measures for center and spread are the median and Five Number Summary. OTrue False

Explanation / Answer

8) A company personnel analyst randomly selects a sample of six workers from a manufacturing plant and measures their output on Wednesday. He takes an independent random sample of workers who make the same part and measure their output on Friday.

And we have to test the average output on Friday is the same as the average output on Wednesday.

In this case, the analyst measures the same parts.

So we have to use here pair t-test.

The correct option is a. ttest: Paired Two Sample for Means.

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