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The company has a new process for manufacturing large artificial sapphires. In a trial run, 12...

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Statistics

The company has a new process for manufacturing large artificialsapphires. In a trial run, 12 sapphires are produced. The meanweight for these 12 gems is x = 6.75 carats, and the samplestandard deviation s = 0.33 carats. Find the 95% confidenceinterval for the population mean weight of artificialsapphires.

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SolutionNote that Population standard deviationis unknown So we use    See Answer
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