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3. Exposure to dust at work can lead to lung disease later in life. One study measured the workplace exposure of tunnel construction workers. The study compared 125 drill and blast workers with 220 outdoor concrete workers. Total dust exposure was measured in milligram years per cubic meter (mg.y/m). The mean exposure for the drill and blast workers was 18.0 mg.y/m³ with a standard deviation of 7.8 mg.y/m³. For the outdoor concrete workers, the mean exposure was 16.5 mg.y/m³ with a standard deviation of 3.4 mg.y/m³. Test the claim that the mean exposures for these two types of workers are the same.

3. Exposure to dust at work can lead to lung disease later in life. One study measured the workplace exposure of tunnel construction workers. The study compared 125 drill and blast workers with 220 outdoor concrete workers. Total dust exposure was measured in milligram years per cubic meter (mg.y/m). The mean exposure for the drill and blast workers was 18.0 mg.y/m³ with a standard deviation of 7.8 mg.y/m³. For the outdoor concrete workers, the mean exposure was 16.5 mg.y/m³ with a standard deviation of 3.4 mg.y/m³. Test the claim that the mean exposures for these two types of workers are the same.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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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3. Exposure to dust at work can lead to lung disease later in life. One study measured the workplace exposure of tunnel construction workers. The study compared 125 drill and blast workers with 220 outdoor concrete workers. Total dust exposure was measured in milligram years per cubic meter (mg.y/m). The mean exposure for the drill and blast workers was 18.0 mg.y/m³ with a standard deviation of 7.8 mg.y/m³. For the outdoor concrete workers, the mean exposure was 16.5 mg.y/m³ with a standard deviation of 3.4 mg.y/m³. Test the claim that the mean exposures for these two types of workers are the same.
Transcribed Image Text:3. Exposure to dust at work can lead to lung disease later in life. One study measured the workplace exposure of tunnel construction workers. The study compared 125 drill and blast workers with 220 outdoor concrete workers. Total dust exposure was measured in milligram years per cubic meter (mg.y/m). The mean exposure for the drill and blast workers was 18.0 mg.y/m³ with a standard deviation of 7.8 mg.y/m³. For the outdoor concrete workers, the mean exposure was 16.5 mg.y/m³ with a standard deviation of 3.4 mg.y/m³. Test the claim that the mean exposures for these two types of workers are the same.
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