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answerhappygod
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Homework Section 1
Homework Section 1 (6.84 KiB) Viewed 37 times
peridocally, a town water department tests the drinking water. the lead levels in the water collected for a samle of 10 residents of the town had a mean of 2.3 mg/L and a standard deviation of 1.8 mg/L. construct a 90% confidence interval for the mean lead level in the water specimens
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