2 1 E Coli in Swimming Areas To investigate water quality the Columbus Dis patch...
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2 1 E Coli in Swimming Areas To investigate water quality the Columbus Dis patch took water specimens at 16 Ohio State Park swimming areas in central Ohio Those specimens were taken to laboratories and tested for E coli which are bacteria that can cause serious gastrointestinal problems For reference if a 100 milliliter specimen about 3 3 ounces of water contains more than 130 E coli bacteria it is considered unsafe Here are the E coli levels per 100 milliliters found by the laboratories 2 ECOLI 291 0 10 9 190 4 45 7 47 0 86 0 44 0 18 9 1 0 50 0 28 5 18 9 16 0 34 0 8 6 9 6 28 5 18 9 Find the mean E coli level How many of the lakes have E coli levels greater ch th 2 What feature of the data explains the fact that the mean is
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