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The Environmental Protection Agency(EPA) uses a measure called the pollutant Standards Index (PSI) to measure air qualit
Posted: Wed May 11, 2022 3:53 pm
by answerhappygod
- The Environmental Protection Agency Epa Uses A Measure Called The Pollutant Standards Index Psi To Measure Air Qualit 1 (21.41 KiB) Viewed 26 times
The Environmental Protection Agency(EPA) uses a measure called the pollutant Standards Index (PSI) to measure air quality in a city. A PSI reading over 100 indicates a day when the air quality is considered unhealthy. The measurements represent the number of days in 1995 that the PSI was over 100 for metropolitan areas in the U.S. Midwest. Summary statistics are provided. Which of the following statements is true? min Q1 median Q3 max mean sd 0 1 2.5 4.25 14 3.6 3.747 20 n the EPA should not be concerned because there were no PSI measurements exceeding 100 there is evidence that this distribution is left skewed 25% of metropolitan areas reported or 1 days in which the PSI was over 100 14 metropolitan areas participated in this study