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<br />Table 6. Sample Adequacy -Cover and Shrub Density, Seneca IIW Mine, SCC, Routt Co., CO - 1996 <br />-------- COVER ----•---- ------- SHRUB DENSITY ------ <br />N-min" <br />(Percents st. dav. N' n-1 <br />Reclaimed ~ 40.3 12.1 15 <br />N-min" <br />N' n-1 <br />261 I 71.6 159.1 15 <br /> <br />'N =Sample Size <br />"N-min =Minimum sample size necessary to detect a 10 % reduction in the mean with 90% confidence using n-1 degrees of freedom, and a hvo-tailed test. <br />