Question: Nitrogen and Seagrass. The seagrass Thalassia testudinym is an integral part of the Texas coastal ecosystem. Essential to the growth of \(T\). testudinum is ammonium. Researchers Kun-Seop Lee and Kenneth H. Dunton of the Marine Science Institute of the University of Texas at Austin noticed that the seagrass beds in Corpus Christi Bay (CCB) were taller and thicker than those in Lower Laguna Madre (LLM). They compared the sediment ammonium concentrations in the two locations and published their findings in Marine Ecology Progress Series (Vol. 196, pp. \(39-48)\). Following are the summary statistics on sediment ammonium concentrations, in micromoles, obtained by the researchers.

At the \(1 \%\) significance level, is there sufficient evidence to conclude that the mean sediment ammonium concentration in \(\mathrm{CCB}\) exceeds that in LLM?

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