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.
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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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.
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