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acres). Hence the standard that there would be at least at least 2000 stems per acre in Shrub <br />Concentration Areas has been met for 2011. <br />'Background" Density <br />Use of a reverse -null t -test of the assertion that the 2011 BRB -1 Background woody plant density exceeds <br />90% of the standard is shown as follows: <br />t <br />I— (0.9 * technical standard) <br />t — 247 —180 — 0.963 <br />(380.4 <br />Since critical t = 0.854 (one - tailed, alpha = 0.2, 29 df) and t is greater than this critical value, reclamation <br />success for background woody plant density for Phase III in 2011 is demonstrated. <br />Concentration Area Density <br />Use of a reverse -null t -test of the assertion that the 2011 BRB -1 Concentration Area woody plant density <br />exceeds 90% of the standard is shown as follows: <br />I— (0.9 * technical standard) <br />s <br />t 4209 —1800 — 5.936 <br />z — 2869.3 <br />Since critical t = 0.849 (one - tailed, alpha = 0.2, 49 df) and t is greater than this critical value, reclamation <br />success for concentration area woody plant density for Phase III in 2011 is demonstrated. <br />27 <br />