Mathematics, 05.05.2020 09:01, brown62
The water department checks the city water supply on a regular basis for contaminants such as xylenes. the water department takes 200 samples and estimates that the concentration of xylenes in your drinking water is 3.5 ppb (parts per billion), with a standard deviation of 0.2 ppb.
assuming the samples were random and unbiased, how much confidence can you have in this data?
Answers: 2
Mathematics, 21.06.2019 17:30, samymaria1344
Lee has $1.75 in dimes and nickels. the number of nickels is 11 more than the number of dimes. how many of each coin does he have?
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Find the value of the variable and the length of each chord for #5 and #6.
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The water department checks the city water supply on a regular basis for contaminants such as xylene...
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