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The (reverse —null) hypothesis being tested asserts that the bond release block mean (l.) is greater than <br />90% of the standard . The alternative hypothesis asserts that the bond release block mean is <br />indistinguishable from 90% of the standard. If t, is greater than the 1- tailed t table value for alpha error <br />probability of 0.20, with (n -1) degrees of freedom then H would be rejected, and revegetation would be <br />deemed successful (i.e. the bond release block mean is confidently greater than 90% of the standard) <br />Were the mean allowable herbaceous cover or production from the BRB less than 90% of the cover <br />standard (see above), and sample adequacy had been demonstrated for both the reclaimed and <br />reference areas, then a one - sample t -test of the traditional null hypothesis would be made (CDMG 2005 <br />rules, 4.15.11 (2)(b)): <br />Where: x = Bond Release Block Sample Mean <br />Q = 90% of Standard <br />S- = Standard error of mean [s / -] <br />S = Sample standard deviation <br />n = Sample size <br />t� = Calculated t value <br />t = Table t value (alpha = 0.1) <br />The (traditional) null hypothesis being tested would be that the bond release block mean (µ) is <br />indistinguishable from 90% of the standard, stated as H 1.1 = Q. If t. was less than or equal to the 1- tailed <br />t table value for alpha error probability of 0.10, at (n -1) degrees of freedom, then H is accepted, and <br />revegetation is deemed successful (i.e indistinguishable from the 90% of the standard). <br />Species Diversity <br />For purposes of assessment of progress toward bond release standards, species diversity is judged using <br />the following four tests present in the provisions of the permit; success is demonstrated by passing the <br />first (A) and at least two of the remaining three (B, C, and /or D). <br />Mandatory Test A): No Overwhelming Dominant <br />No single plant species may exceed 60% relative cover. <br />7 <br />