Hurricanes Katrina and Rita caused the flooding of large parts of New Orleans, leaving behind large amounts of new sediment. Before the hurricanes, the soils in New Orleans were known to have high concentrations of lead, which is a dangerous environmental toxin. Zahran et al. (2010) measured the lead concentration of blood (in µg/dl) of children living i the 46 areas both before and after the hurricanes. The ratio of blood lead concentration after the hurricanes to that before the hurricanes for these areas are provided. This ratio has an approximately normal distribution. A ratio of 1.0 indicates no change. 0.67, 0.57, 0.88, 0.95, 0.60, 0.98, 0.64, 0.48, 0.26, 0.77, 0.87, 0.34, 0.56, 0.88, 0.77, 0.67, 0.59, 0.56, 0.54, 0.64, 0.90, 0.00, 0.53, 0.63, 0.57, 0.70, 0.41, 0.42, 0.69, 0.45, 0.67, 0.50, 0.60, 1.16, 0.33, 0.63, 0.63, 1.00, 1.05, 0.67, 1.00, 1.00, 0.75, 1.00, 1.00, 0.63 The sample size n as well as the sum of the ratio values and the sum of the ratio values squared are also provided, with Y; representing the ith ratio. n = 46, Σ Υ = 31.14, Σ (Y) = 23.5806 Click to download the data in your preferred format. CSV Excel JMP Mac-Text Minitab PC-Text R SPSS TI CrunchIt! Is this ratio significantly different from 1.0? Conduct the appropriate hypothesis test. Determine the test statistic t. Round your answer to three decimal places.
Hurricanes Katrina and Rita caused the flooding of large parts of New Orleans, leaving behind large amounts of new sediment. Before the hurricanes, the soils in New Orleans were known to have high concentrations of lead, which is a dangerous environmental toxin. Zahran et al. (2010) measured the lead concentration of blood (in µg/dl) of children living i the 46 areas both before and after the hurricanes. The ratio of blood lead concentration after the hurricanes to that before the hurricanes for these areas are provided. This ratio has an approximately normal distribution. A ratio of 1.0 indicates no change. 0.67, 0.57, 0.88, 0.95, 0.60, 0.98, 0.64, 0.48, 0.26, 0.77, 0.87, 0.34, 0.56, 0.88, 0.77, 0.67, 0.59, 0.56, 0.54, 0.64, 0.90, 0.00, 0.53, 0.63, 0.57, 0.70, 0.41, 0.42, 0.69, 0.45, 0.67, 0.50, 0.60, 1.16, 0.33, 0.63, 0.63, 1.00, 1.05, 0.67, 1.00, 1.00, 0.75, 1.00, 1.00, 0.63 The sample size n as well as the sum of the ratio values and the sum of the ratio values squared are also provided, with Y; representing the ith ratio. n = 46, Σ Υ = 31.14, Σ (Y) = 23.5806 Click to download the data in your preferred format. CSV Excel JMP Mac-Text Minitab PC-Text R SPSS TI CrunchIt! Is this ratio significantly different from 1.0? Conduct the appropriate hypothesis test. Determine the test statistic t. Round your answer to three 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
Related questions
Question
please answer!
Transcribed Image Text:Hurricanes Katrina and Rita caused the flooding of large parts of New Orleans, leaving behind large amounts of new
sediment. Before the hurricanes, the soils in New Orleans were known to have high concentrations of lead, which is a
dangerous environmental toxin. Zahran et al. (2010) measured the lead concentration of blood (in µg/dl) of children living in
the 46 areas both before and after the hurricanes. The ratio of blood lead concentration after the hurricanes to that before the
hurricanes for these areas are provided. This ratio has an approximately normal distribution. A ratio of 1.0 indicates
no change.
0.67, 0.57, 0.88, 0.95, 0.60, 0.98, 0.64, 0.48,
0.26, 0.77, 0.87, 0.34, 0.56, 0.88, 0.77, 0.67,
0.59, 0.56, 0.54, 0.64, 0.90, 0.00, 0.53, 0.63,
0.57, 0.70, 0.41, 0.42, 0.69, 0.45, 0.67, 0.50,
0.60, 1.16, 0.33, 0.63, 0.63, 1.00, 1.05, 0.67,
1.00, 1.00, 0.75, 1.00, 1.00, 0.63
The sample size n as well as the sum of the ratio values and the sum of the ratio values squared are also provided, with Y;
representing the ith ratio.
n = 46, Y₁ = 31.14,
Σ (Y?) = 23.5806
Click to download the data in your preferred format.
CSV Excel JMP Mac-Text Minitab PC-Text R SPSS TI CrunchIt!
Is this ratio significantly different from 1.0? Conduct the appropriate hypothesis test.
Determine the test statistic t. Round your answer to three decimal places.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 4 images
Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
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
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
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
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
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
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman