(Answered) Question public health and nutrition a filtration system

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Question: Public Health and Nutrition A filtration system made for small businesses is designed to remove particulate matter from the air. To test the new device, a random sample of businesses was obtained. The concentration of particulate matter was measured (in mg/m³). The filtration system was then allowed to run for 24 hours, and the concentration of particulate matter was measured again. The differences (before filtration - after filtration) were recorded. Assume normality. Is there any evidence to suggest that the new filtration system improves air quality by removing particulate matter? Use a = 0.05. Write a Solution Trail for this problem.

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