Answer Happy

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. Week Number Dissolved O2, ppm 4.5 1 2 5.0 3 5.7 4.3 4 5 5 4.7 6 4.9 7 4.5 8 5.1 The week 3 measurement in the data set is suspected of being an outlier. Use the Q test to determine if the value can be rejected at the 90% confidence level. (This problem requires values in your textbook's specific appendices, which you can access through the OWLv2 MindTap Reader. You should not use the OWLv2 References' Tables to answer this question as the values will not match.) Q= Qcrit Decision: