Mathematics, 06.04.2021 05:10 alananicoleee
11. Twelve samples of water form a particular source have an average lead concentration of 12.5µg/L with a standard deviation of 2.0µg/L. 1 (a) Find a 95% confidence interval for the lead concentration in water from this source. (b) Can you conclude that the lead concentration is less than 14µg/L?
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11. Twelve samples of water form a particular source have an average lead concentration of 12.5µg/L...
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