Britannia metal is composed of tin (Sn), antimony (Sb), and copper (Cu), with a known standard deviation for the antimony content to be ±0.7%. If six samples were measued and found to have the following antimony content, what is the 95% confidence interval for the population's expected mean? (Omit the mean from your answer, report the interval only, without the +/- to two decimal places). Sample 1: 6.04% Sample 2: 6.01% Sample 3: 5.94% Sample 4: 6.07% Sample 5: 5.98% Sample 6: 5.94%

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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Britannia metal is composed of tin (Sn), antimony (Sb), and copper (Cu), with a known standard deviation for the antimony content to be ±0.7%. If six samples were measued and found to have the following antimony content, what is the 95% confidence interval for the population's expected mean? (Omit the mean from your answer, report the interval only, without the +/- to two decimal places).

Sample 1: 6.04% Sample 2: 6.01% Sample 3: 5.94% Sample 4: 6.07% Sample 5: 5.98% Sample 6: 5.94%

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