Trace metals in drinking water affect the flavor and an unusually high concentration can pose a health hazard. We obtain the fol
lowing data for 9 glasses of water. Each glass contained the same amount of water. We look at the zinc concentration (mg/L) in bottom water and the zinc concentration in surface water for each glass. It is fine to round any standard deviations to 2 decimals. Glass 1 2 3 4 5 6 7 8 9 Bottom Water .48 .32 .62 .58 .76 .77 .70 .64 .52 Surface Water .42 .24 .39 .41 .61 .61 .63 .52 .41
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