Mathematics, 01.08.2020 17:01, ahmadfarriz4088
Nitrates are groundwater contaminants derived from fertilizer, septic tank seepage and other sewage. Nitrate poisoning is particularly hazardous to infants under the age of 6 months. The maximum contaminant level (MCL) is the highest level of a contaminant the government allows in drinking water. For nitrates, the MCL is 10mg/L. The health department wants to know what proportion of wells in Madison Count that have nitrate levels above the MCL. A worker has been assigned to take a simple random sample of wells in the county, measure the nitrate levels, and assess compliance. What sample size should the health department obtain if the estimate is desired to be within 2% with 95% confidence if: (hint: there are two different methods)There is no prior information available?
Answers: 3
Mathematics, 21.06.2019 18:00, huntbuck14
What is the range for 31,39,29,34,37,24,36,33,34,28
Answers: 1
Mathematics, 22.06.2019 02:00, 2Pallie2
Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno nina made two errors in the proof. identify and correct the errors.
Answers: 1
Mathematics, 22.06.2019 02:30, missalawode28
Two farmers pay a total rent of $140 for a pasture. the first farmer placed $4 oxen in the pasture, and the second farmer placed $30 sheep in the pasture. the farmers split the rent based on the proportion of the pasture eaten by their own animals that month. how much should the first farmer pay, if 1 ox eats as much as 10 sheep in a month?
Answers: 1
Nitrates are groundwater contaminants derived from fertilizer, septic tank seepage and other sewage....
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