11/15/2020MyOpenMathTrace metals in drinking water affect the flavor and an unusually high concentration can pose a healthhazard. Ten pairs of data were taken measuring zinc concentration in bottom water and surface waterof a water source.ZincZincconcentrationLocationconcentrationin bottomin surface waterwater1.430.4152.266.238.567.3904.531.410.707.6056..716.6097.651.6328.589.523.469.41110.723.612Do the data support that the zinc concentration is less on the surface than the bottom of the watersource, at the a = 0.1 level of significance? Note: A normal probability plot of difference in zincconcentration between the bottom and surface of water indicates the population could be normal anda boxplot indicated no outliers.a. Express the null and alternative hypotheses in symbolic form for this claim. AssumeHj = µ1 - l2, where u1 is the population mean zinc concentration in the bottom of water andlz is the mean zinc concentration in the surface of water.Ho:ui Select an answerHa: Hã Select an answerb. What is the significance level?c. What is the test statistic? Round to 3 decimal places.? Vd. What is the p -value? Round to 4 decimal places.p =e. Make a decision.Reject the nullDo not reject the nullhttps://www.myopenmath.com/assess2/?cid%3D80488&aid%3D5754732#/print6/7 11/15/2020MyOpenMathf. What is the conclusion?There is not sufficient evidence to support the claim that the zinc concentration is less onthe surface than the bottom of the water source.There is sufficient evidence to support the claim that the zinc concentration is less on thesurface than the bottom of the water source.https://www.myopenmath.com/assess2/?cid=80488&aid=5754732#/print7/7

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Description: 11/15/2020MyOpenMathTrace metals in drinking water affect the flavor and an unusually high concentration can pose a healthhazard. Ten pairs of data were taken measuring zinc concentration in bottom water and surface waterof a water source.ZincZincco

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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 Zinc concentration in bottom Location concentration in surface water water 1 .430 .415 .266 .238 3 .567 .390 4 .531 .410

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 Zinc concentration in bottom Location concentration in surface water water 1 .430 .415 .266 .238 3 .567 .390 4 .531 .410

MATLAB: An Introduction with Applications

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ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

11/15/2020
MyOpenMath
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
Zinc
concentration
Location
concentration
in bottom
in surface water
water
1
.430
.415
2
.266
.238
.567
.390
4
.531
.410
.707
.605
6.
.716
.609
7
.651
.632
8
.589
.523
.469
.411
10
.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
Hj = µ1 - l2, where u1 is the population mean zinc concentration in the bottom of water and
lz is the mean zinc concentration in the surface of water.
Ho:ui Select an answer
Ha: Hã Select an answer
b. What is the significance level?
c. What is the test statistic? Round to 3 decimal places.
? V
d. What is the p -value? Round to 4 decimal places.
p =
e. Make a decision.
Reject the null
Do not reject the null
https://www.myopenmath.com/assess2/?cid%3D80488&aid%3D5754732#/print
6/7

11/15/2020
MyOpenMath
f. What is the conclusion?
There is not sufficient evidence to support the claim that the zinc concentration is less on
the surface than the bottom of the water source.
There is sufficient evidence to support the claim that the zinc concentration is less on the
surface than the bottom of the water source.
https://www.myopenmath.com/assess2/?cid=80488&aid=5754732#/print
7/7

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