(Answered) A company manufactures metal tubes for the aerospace

Statistics

A company manufactures metal tubes for the aerospace industry. The company has two workers (Joe and Sam) who measure the final products to ensure that they are the correct length. The company manager wants to determine if there is a significant difference in the measurements made by these two individuals. He has each of them measure the same set of 15 tubes. Assume that the differences are calculated as Joe - Sam.

Select all of the correct null and alternative hypotheses.

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