An industrial company claims that the mean pH level of the water in a nearby river is

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An industrial company claims that the mean pH level of the water in a nearby river is 6.8. You randomly select 39 water samples and measure the pH of each.

The sample mean and standard deviation are 6.7 and 0.35, respectively. Is there enough evidence to reject the company’s claim at α = 0.05?

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Elementary Statistics Picturing The World

ISBN: 9781292260464

7th Global Edition

Authors: Betsy Farber, Ron Larson

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Question Posted: Apr 29, 2024 08:01 AM

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An industrial company claims that the mean pH level of the water in a nearby river is

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Elementary Statistics Picturing The World

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