State the null hypothesis and the alternative hypothesis for this situation: "The level of a pollutant in a river adjacent to a chemical plant is regularly monitored. Over a period of years, the normal level of the pollutant of 0.5 ppm has been established by chemical analyses. Recently, the company has made several changes to the plant that appear to have increased the level of the pollutant. The company wants proof that the pollutant level has not increased." 10. State the null hypothesis and the alternative hypothesis for this situation: "Sewage and industrial pollutants dumped into a body of water can reduce the dissolved oxygen concentration and adversely affect aquatic species. In one study, weekly readings are taken from the same location in a river over a two-month period. The mean dissolved oxygen obtained from the analysis is 4.5 ppm. Some scientists think that 5.0 ppm is a dissolved oxygen level that is marginal for fish to live. They want to proof whether the mean dissolved oxygen concentration is less than 5.0 ppm."
State the null hypothesis and the alternative hypothesis for this situation: "The level of a pollutant in a river adjacent to a chemical plant is regularly monitored. Over a period of years, the normal level of the pollutant of 0.5 ppm has been established by chemical analyses. Recently, the company has made several changes to the plant that appear to have increased the level of the pollutant. The company wants proof that the pollutant level has not increased." 10. State the null hypothesis and the alternative hypothesis for this situation: "Sewage and industrial pollutants dumped into a body of water can reduce the dissolved oxygen concentration and adversely affect aquatic species. In one study, weekly readings are taken from the same location in a river over a two-month period. The mean dissolved oxygen obtained from the analysis is 4.5 ppm. Some scientists think that 5.0 ppm is a dissolved oxygen level that is marginal for fish to live. They want to proof whether the mean dissolved oxygen concentration is less than 5.0 ppm."
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter4: Eigenvalues And Eigenvectors
Section4.6: Applications And The Perron-frobenius Theorem
Problem 25EQ
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