Trace metals in drinking water affect the flavor and an unusually high concentration can pose...
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Trace metals in drinking water affect the flavor and an unusually high concentration can pose a health hazard Ten pairs of data were taken measuring zinc concentration in bottom water and surface water of a water source Zinc Location concentration in bottom water 1 2 3 4 5 6 7 8 9 430 266 567 531 707 716 651 10 589 469 Zinc concentration in surface water 415 238 390 410 605 609 632 523 411 723 612 Do the data support that the zinc concentration is less on the surface than the bottom of the water source at the a 0 1 level of significance Note A normal probability plot of difference in zinc concentration between the bottom and surface of water indicates the population could be normal and a boxplot indicated no outliers a Express the null and alternative hypotheses in symbolic form for this claim Assume 1 2 where is the population mean zinc concentration in the bottom of water and 2 is the mean zinc concentration in the surface of water Ho Select an answer Ha Ha Select an answer b What is the significance level a c What is the test statistic Round to 3 decimal places C d What is the p value Round to 4 decimal places
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