A researcher for the EPA measured the amount of arsenic in the water near a sewage...
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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 8 6 O 29 00 15 20 25 30 35 40 45 50 55 60 65 20 25 30 35 40 45 How many measurements taken in this time frame were within 45-50 ppb? 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 8 6 O 29 00 15 20 25 30 35 40 45 50 55 60 65 20 25 30 35 40 45 How many measurements taken in this time frame were within 45-50 ppb?
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To determine the number of measurements taken within the 4550 ppb range we need to examine the frequ... View the full answer
Related Book For
Statistics Unlocking The Power Of Data
ISBN: 9780470601877
1st Edition
Authors: Robin H. Lock, Patti Frazer Lock, Kari Lock Morgan, Eric F. Lock, Dennis F. Lock
Posted Date:
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