An industrial company claims that the mean pH level of the water in a nearby river is6.8. You randomly select 19 water samples and measure the pH of each. The sample meanand the sample standard deviation are 7.0 and 0.24, respectively. Is there enough evidenceatα= 0.05 to reject the claim that the pH level is 6.8? Assume a normally distributedpopulation.
An industrial company claims that the mean pH level of the water in a nearby river is6.8. You randomly select 19 water samples and measure the pH of each. The sample meanand the sample standard deviation are 7.0 and 0.24, respectively. Is there enough evidenceatα= 0.05 to reject the claim that the pH level is 6.8? Assume a normally distributedpopulation.
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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An industrial company claims that the mean pH level of the water in a nearby river is6.8. You randomly select 19 water samples and measure the pH of each. The sample meanand the sample standard deviation are 7.0 and 0.24, respectively. Is there enough evidenceatα= 0.05 to reject the claim that the pH level is 6.8? Assume a normally distributedpopulation.
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