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. Location 1 2 3 4 5 6 7 8 9 10 Zinc Zinc concentration concentration in bottom water in surface water .430 .266 .567 .531 .707 .716 a .651 589 .469 .723 .415 .238 .390 .410 .605 .609 .632 .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 Ha 1-2, where is the population mean zinc concentration in the bottom of water and H₂ 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? c. What is the test statistic? Round to 3 decimal places. ? ♥ d. What is the p-value? Round to 4 decimal places.
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. Location 1 2 3 4 5 6 7 8 9 10 Zinc Zinc concentration concentration in bottom water in surface water .430 .266 .567 .531 .707 .716 a .651 589 .469 .723 .415 .238 .390 .410 .605 .609 .632 .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 Ha 1-2, where is the population mean zinc concentration in the bottom of water and H₂ 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? c. What is the test statistic? Round to 3 decimal places. ? ♥ d. What is the p-value? Round to 4 decimal places.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text: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.
Location
1
2
3
4
55
6
7
00
8
9
10
Zinc
concentration
in bottom water in surface water
Zinc
concentration
430
.266
567
531
.707
.716
.651
.589
.469
.723
415
238
.390
.410
.605
.609
.632
.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
Ha
1- μ2, where ₁ is the population mean zinc concentration in the bottom of water and
H2 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.
2 ♥
d. What is the p-value? Round to 4 decimal places.
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