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A business receives supplies of copper tubing where the supplier has said that the average length is 26.70 inches so that they will fit into

A business receives supplies of copper tubing where the supplier has said that the average length is 26.70 inches so that they will fit into the business' machines. A random sample of 50 copper tubes finds they have an average length of 26.75 inches. The population standard deviation is assumed to be 0.20 inches. At =0.05, should the business reject the supplier's claim?

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