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BRB -5 (269.3 acres). Hence the standard that there would be at least 5% of the Phase Ill BRB block with <br />at least 1,000 stems per acre has been met for 2012. <br />A reverse t -test of the assertion that the 2012 BRB -5 Background woody plant density is indistinguishable <br />from 90% of the standard is as follows: <br />210.4 — 90 _ , ? <br />rca.L. (392.5 <br />3 <br />Since critical t = 0.850 (one - tailed, alpha = 0.2, 53 -1 df) and t c a , c is greater than this critical value, the <br />hypothesis of no difference is rejected and reclamation success for 2012 BRB -5 background woody plant <br />density under Phase III is demonstrated. <br />A reverse t -test of the assertion that the 2011 BRB -5 Concentration Area woody plant density is <br />indistinguishable from 90% of the standard is as follows: <br />— (0,9 * s*andorci.) <br />r <br />?1 <br />0.9 * technical standard) <br />S <br />y ti <br />1614.7 — 900 <br />=4.07 <br />(12.78.81 <br />Since critical t = 0.850 (one - tailed, alpha = 0.2, 53 -1 df) and t c a , c is greater than this critical value, the <br />hypothesis of no difference is rejected and reclamation success for BRB -5 2012 woody plant <br />concentrations areas under Phase Ill is demonstrated. <br />29 <br />