(Answered) Question manufacturing and product development tefloncoated

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Question: Manufacturing and Product Development Tefloncoated pots and pans are designed to be nonstick and to make cooking and clean-up easier. A recent study compared the thickness of the Teflon layer in new, factory-coated pans with recoated pans.

a. Find a 95% confidence interval for the population mean Teflon thickness in factory-coated pans.

b. Find a 95% confidence interval for the population mean Teflon thickness in recoated pans.

c. Is there any evidence to suggest these two population means are different? Justify your answer.

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