Question:
A researcher for the EPA measured the amount of arsenic in
Last updated: 5/27/2023
A researcher for the EPA measured the amount of arsenic in the water near a sewage treatment plant Over 12 days he took n 40 measurements in ppb His sample data is summarized in the frequency distribution polygon shown below 12 10 oog D to 19 30 35 40 45 50 55 60 65 70 75 80 ans Arsenic innh How many measurements taken in this time frame were within 45 50 ppb