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<br />x-Q <br />to _ <br />Sx <br />www.bio-geo.com <br />Where: <br />x = Bond Release Block Sample Mean <br />Q = 90 % of Standard <br />S_ = Standard error of mean [sI \ n <br />x <br />S = Sample standard deviation <br />n = Sample size <br />t, = Calculated t value <br />tt = Table t value <br />3. If sample adequacy is NOT achieved at (rec) but is achieved with a minimum of 15 <br />samples at (ref), use a one-sample "reverse null" t-test, using the t-test shown in <br />Equation 2. CDRMS requires a minimum of n = 30 at (rec), and that sample mean (rec) <br />is greater than Q. The reverse-null t-test is one-sided with alpha = 0.20. The null <br />hypothesis being tested is that the mean (rec) is less than or equal to Q. If the null <br />hypothesis is rejected, vegetation is successful. <br />4. If sample adequacy is NOT achieved at (ref), use a two-sample "reverse null" t-test with <br />Satterthwaite approximation of standard error and degrees of freedom. The test <br />requires a minimum of 30 samples in the (rec) and (ref), and that mean (rec) is greater <br />than Q. To use this test, first the Satterthwaite standard error is calculated as <br />2 <br />Equation 3 ((Q+ ?sSE - ? <br />r <br />Where: <br />6