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 10 .430 .266 .567 .531 .707 .716 .651 .589 .469 .723 Zinc concentration in surface water .415 .238 .390 .410 .605 .609 .632 Ha: 0 b. What is the significance level? a = .523 .411 .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 = μ₁ −μ2, where ₁ is the population mean zinc concentration in the bottom of water and μ₂ is the mean zinc concentration in the surface of water. Ho: Ma=0 0° c. What is the test statistic? Round to 3 decimal places. d. What is the p-value? Round to 4 decimal places. P =

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 10 .430 .266 .567 .531 .707 .716 .651 .589 .469 .723 Zinc concentration in surface water .415 .238 .390 .410 .605 .609 .632 Ha: 0 b. What is the significance level? a = .523 .411 .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 = μ₁ −μ2, where ₁ is the population mean zinc concentration in the bottom of water and μ₂ is the mean zinc concentration in the surface of water. Ho: Ma=0 0° c. What is the test statistic? Round to 3 decimal places. d. What is the p-value? Round to 4 decimal places. P =

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section4.5: Correlation And Causation

Problem 2AGP

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