the concentration of heaxane 0a common solvent) was measured in units of micrograms per liter for a simple random sample of ninteen specimens of untreated ground water taken near a municipal landfill. the sample mean was 508.4 with a sample standard deviation of 4.3. sixteen specimens of treated ground water had an average hexane concentration of 506.1. with a standard deviation of 4.7. it is responsable to assume that both sample come from populations that are approximately normal. can you conclude that the mean hexane concentration is less in treated water than in untreated water? use the α= 0.01 level of significance. A). yes B). No

the concentration of heaxane 0a common solvent) was measured in units of micrograms per liter for a simple random sample of ninteen specimens of untreated ground water taken near a municipal landfill. the sample mean was 508.4 with a sample standard deviation of 4.3. sixteen specimens of treated ground water had an average hexane concentration of 506.1. with a standard deviation of 4.7. it is responsable to assume that both sample come from populations that are approximately normal. can you conclude that the mean hexane concentration is less in treated water than in untreated water? use the α= 0.01 level of significance. A). yes B). No

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Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.5: Comparing Sets Of Data

Problem 13PPS

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