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2. (21 pts) (A tale of Two Cities...). The following data was taken from the sludge of the waste treatment plants in two cities. The data represents levels of Zinc in ppm in the sludge. Both cities used identical equipment in their treatment plants, and the data were collected during the same time periods. 25.2 City A 39.2 25.5 31.9 47.7 39.1 City B 55.3 2.3. Now, find a single 95% CI for the mean difference between groups. You may want to use 'Each sample is in its own column' if you have the data for each city in a different column. Perform a two-sided hypothesis test. What do you conclude? 2.1. First, calculate a separate 95% CI for the mean Zinc in each city (to be clear, you're making two separate confidence intervals. Show your results. 2.2. These two intervals overlap. What might this suggest about zinc levels between cities? 50.7 Two-Sample for the Mean Lii

2. (21 pts) (A tale of Two Cities...). The following data was taken from the sludge of the waste treatment plants in two cities. The data represents levels of Zinc in ppm in the sludge. Both cities used identical equipment in their treatment plants, and the data were collected during the same time periods. 25.2 City A 39.2 25.5 31.9 47.7 39.1 City B 55.3 2.3. Now, find a single 95% CI for the mean difference between groups. You may want to use 'Each sample is in its own column' if you have the data for each city in a different column. Perform a two-sided hypothesis test. What do you conclude? 2.1. First, calculate a separate 95% CI for the mean Zinc in each city (to be clear, you're making two separate confidence intervals. Show your results. 2.2. These two intervals overlap. What might this suggest about zinc levels between cities? 50.7 Two-Sample for the Mean Lii

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 31PPS
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2. (21 pts) (A tale of Two Cities...). The following data was taken from the sludge of the waste treatment plants in two cities. The data represents levels of Zinc in ppm in the sludge. Both cities used identical equipment in their treatment plants, and the data were collected during the same time periods. 25.2 39.2 City A 25.5 31.9 47.7 39.1 City B 55.3 2.3. Now, find a single 95% CI for the mean difference between groups. You may want to use 'Each sample is in its own column' if you have the data for each city in a different column. Perform a two-sided hypothesis test. What do you conclude? 2.1. First, calculate a separate 95% CI for the mean Zinc in each city (to be clear, you're making two separate confidence intervals. Show your results. 2.2. These two intervals overlap. What might this suggest about zinc levels between cities? 50.7 Two-Sample t for the Mean Helping Indus 05 Ape C11 dobal Wang C17 City A Each sample is in its own cau Sample 1: Ot 2 y
Transcribed Image Text:2. (21 pts) (A tale of Two Cities...). The following data was taken from the sludge of the waste treatment plants in two cities. The data represents levels of Zinc in ppm in the sludge. Both cities used identical equipment in their treatment plants, and the data were collected during the same time periods. 25.2 39.2 City A 25.5 31.9 47.7 39.1 City B 55.3 2.3. Now, find a single 95% CI for the mean difference between groups. You may want to use 'Each sample is in its own column' if you have the data for each city in a different column. Perform a two-sided hypothesis test. What do you conclude? 2.1. First, calculate a separate 95% CI for the mean Zinc in each city (to be clear, you're making two separate confidence intervals. Show your results. 2.2. These two intervals overlap. What might this suggest about zinc levels between cities? 50.7 Two-Sample t for the Mean Helping Indus 05 Ape C11 dobal Wang C17 City A Each sample is in its own cau Sample 1: Ot 2 y
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