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Periodically, a town water department tests the the drinking water of homeowners for contaminants such as lead. The lead
Posted: Sun Oct 03, 2021 3:20 pm
by answerhappygod
- Periodically A Town Water Department Tests The The Drinking Water Of Homeowners For Contaminants Such As Lead The Lead 1 (19.28 KiB) Viewed 118 times
Periodically, a town water department tests the the drinking water of homeowners for contaminants such as lead. The lead levels in water specimens collected for a sample of 10 residents of the town had a mean of 2.2 mg/L and a standard deviation of 2.4 mg/l. Complete parts a through a. Construct a 90% confidence interval for the mean lead level in water specimens from the town. (1.657 2.743) (Round to three decimal places as needed.)