Test of a Single Variance · Try It 1
A SCUBA instructor wants to record the collective depths each of his students dives during their checkout. He is interested in how the depths vary, even though everyone should have been at the same depth. He believes the standard deviation is three feet. His assistant thinks the standard deviation is less than three feet. If the instructor were to conduct a test, what would the null and alternative hypotheses be?
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OpenStax, Introductory Statistics 2e · §11.6 Test of a Single Variance · Try It 1
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