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  3. trace metals in drinking water affect the flavor a

Trace metals in drinking water affect the flavor and an unusually high concentration can pose a...

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Statistics

Trace metals in drinking water affect the flavor and anunusually high concentration can pose a health hazard. We obtainthe following data for 9 glasses of water. Each glass contained thesame amount of water. We look at the zinc concentration (mg/L) inbottom water and the zinc concentration in surface water for eachglass. It is fine to round any standard deviations to 2decimals.

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

Use a 96% confidence interval. Assume that the differencesfollow a normal distribution.

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necessary calculation    See Answer
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