Mathematics, 25.06.2019 07:10 Adolfosbaby

Abusiness 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 48 copper tubes finds they have an average length of 26.77 inches. the population standard deviation is assumed to be 0.20 inches. at α=0.05, should the business reject the supplier’s claim?

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