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S - <br />X <br />Where: <br />= Bond Release Block 1 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 = 0.2) <br />The (reverse) null hypothesis being tested would be that the bond release block mean (µ) was less than <br />or equal to 90% of the standard, stated as H la 5 Q. If t was greater than the 1- tailed t table value for <br />alpha error probability of 0.20, with (n -1) degrees of freedom then H would be rejected, and revegetation <br />would be deemed successful. <br />Were the mean allowable herbaceous cover or production of an adequate sample from the BRB less than <br />90% of the cover standard (see above), then a one - sample t -test would be made in the following form to <br />test the hypothesis of reclamation success for cover (CDMG 2005 revised rule, 4.15.11 (2)(b)): <br />t Q - <br />S- <br />z <br />Where: <br />= Bond Release Block Sample Mean <br />Q = 90% of Standard <br />S = Standard error of mean [ <br />S = Sample standard deviation <br />n = Sample size <br />t, = Calculated t value <br />t, = Tablet value (alpha = 0.1) <br />The (traditional) null hypothesis being tested would be that the bond release block mean (µ) was greater <br />than or equal to 90% of the standard, stated as H >_ Q. If t was less than or equal to the 1- tailed t table <br />7 <br />