Homework Help is Here – Start Your Trial Now!
Math
Statistics
Mercury Levels in Fish Figure 1 shows a scatterplot of the acidity (pH) for a sample of n = 53 Florida lakes vs the average mercury level (ppm) found in fish taken from each lake. There appears to be a negative trend in the scatterplot, and we wish to test whether there is significant evidence of a negative association between pH and mercury levels. 14f !! "I Avg Mercury ⠀ V 1.2- 1.0- 0.8- 0.6- 0.4- 0.2- 0.0-L (a) What are the null and alternative hypotheses? 3 :: μ ::μ4 -10 :: F₂ 5 Figure 1: Water pH vs mercury levels of fish in Florida lakes :: p PH 14₂ :: p P₁ :: P₁ :: P2 8 00 r :: P₂ #0 a p :: I₁

Mercury Levels in Fish Figure 1 shows a scatterplot of the acidity (pH) for a sample of n = 53 Florida lakes vs the average mercury level (ppm) found in fish taken from each lake. There appears to be a negative trend in the scatterplot, and we wish to test whether there is significant evidence of a negative association between pH and mercury levels. 14f !! "I Avg Mercury ⠀ V 1.2- 1.0- 0.8- 0.6- 0.4- 0.2- 0.0-L (a) What are the null and alternative hypotheses? 3 :: μ ::μ4 -10 :: F₂ 5 Figure 1: Water pH vs mercury levels of fish in Florida lakes :: p PH 14₂ :: p P₁ :: P₁ :: P2 8 00 r :: P₂ #0 a p :: I₁

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
See similar textbooks
icon
Related questions
Question

Please read the passage on Mercury Levels of Fish.  And then, answer the questions carefully to get the correct answers.

Mercury Levels in Fish Figure 1 shows a scatterplot of the acidity (pH) for a sample of n = 53 Florida lakes vs the average mercury level (ppm) found in fish taken from each lake. There appears to be a negative trend in the scatterplot, and we wish to test whether there is significant evidence of a negative association between pH and mercury levels. 1.4 H || H Avg Mercury V 1.2- 1.0- 0.8- 0.6- 0.4- 0.2- 0.0 (a) What are the null and alternative hypotheses? 3 μ 6 PH Figure 1: Water pH vs mercury levels of fish in Florida lakes £₂ - 10 441 5 A p 14₂ :: p ^ P₁ :: Pi ^ :: P₂ 8 :: P₂ T :: 0 D p :: I₁
Transcribed Image Text:Mercury Levels in Fish Figure 1 shows a scatterplot of the acidity (pH) for a sample of n = 53 Florida lakes vs the average mercury level (ppm) found in fish taken from each lake. There appears to be a negative trend in the scatterplot, and we wish to test whether there is significant evidence of a negative association between pH and mercury levels. 1.4 H || H Avg Mercury V 1.2- 1.0- 0.8- 0.6- 0.4- 0.2- 0.0 (a) What are the null and alternative hypotheses? 3 μ 6 PH Figure 1: Water pH vs mercury levels of fish in Florida lakes £₂ - 10 441 5 A p 14₂ :: p ^ P₁ :: Pi ^ :: P₂ 8 :: P₂ T :: 0 D p :: I₁
(b) For these data, a statistical software package produces the following output: r = -0.575 p-value = 0.000017. What is the conclusion of the test? There is no evidence of a negative association between pH and mercury levels in fish. O There is weak evidence of a negative association between pH and mercury levels in fish. There is moderately strong evidence of a negative association between pH and mercury levels in fish. O There is very strong evidence of a negative association between pH and mercury levels in fish. eTextbook and Media (c) Is this convincing evidence that low pH causes the average mercury level in fish to increase? O Yes O No
Transcribed Image Text:(b) For these data, a statistical software package produces the following output: r = -0.575 p-value = 0.000017. What is the conclusion of the test? There is no evidence of a negative association between pH and mercury levels in fish. O There is weak evidence of a negative association between pH and mercury levels in fish. There is moderately strong evidence of a negative association between pH and mercury levels in fish. O There is very strong evidence of a negative association between pH and mercury levels in fish. eTextbook and Media (c) Is this convincing evidence that low pH causes the average mercury level in fish to increase? O Yes O No
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman
SEE MORE TEXTBOOKS