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Hypothesis Testing ➤ An engineer takes water samples from 15 lakes in the southern Appalachian Mountains region to test
Posted: Thu May 05, 2022 5:49 pm
by answerhappygod
- Hypothesis Testing An Engineer Takes Water Samples From 15 Lakes In The Southern Appalachian Mountains Region To Test 1 (255.29 KiB) Viewed 48 times
Hypothesis Testing ➤ An engineer takes water samples from 15 lakes in the southern Appalachian Mountains region to test for acidity. If the pH is greater than 6, then the lakes are, on average, nonacidic. The engineer finds a mean pH of 6.6 with a sample standard deviation of 0.672. Can the engineer conclude that on average, the lakes are not acidic at the 5% significance level? Set up a single-tailed hypothesis test to justify your answer. (Note: The critical value is 1.761 for a = 0.05 in a single-tailed test.)