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Noxious Species Absolute Cover, 1998, 1999, and 2000 <br /> Sutey Reference Area #1 <br /> 1998 Data <br /> Sample Mean . . . . . 6.7% <br /> True Mean . . . . . . . 4.4<u<9.0; 80% C.I. <br /> 1999 Data <br /> Sample Mean . . . . . 8.7% <br /> True Mean . . . . . . . 5.5<u<11.9; 80% C.I. <br /> 2000 Data <br /> Sample Mean . . . . . 6.7% <br /> True Mean . . . . . . . 4.9<u<8.5; 80% C.I. <br /> Absolute cover sample mean decreased from 1999 to 2000, but the difference was not <br /> significant, even at the 80% level of statistical confidence. <br />