In manufacturing does worker productivity drop on Friday In an
In manufacturing, does worker productivity drop on Friday? In an effort to determine whether it does, a company’s personnel analyst randomly selects from a manufacturing plant five workers who make the same part. He measures their output on Wednesday and again on Friday and obtains the following results.

The analyst uses α = .05 and assumes the difference in productivity is normally distributed. Do the samples provide enough evidence to show that productivity drops onFriday?
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