Laserfiche WebLink
cover standazd. If the null hypothesis is calculated using the T-test, the calculated t~ value is less than the table <br />t~ value and the null hypothesis is not rejected and the reclamation would be still be considered successful. <br />Null Hypothesis: H°: u > Q <br />u= the bond release cover mean <br />Q= 90% of the approved cover standard. <br />Please refer to page 22 of the Colorado Division f Minerals and Geology Guideline Re@ardin~ Selected Coal <br />Mine Bond Release Issues, dated April 18, 1995, for the T-test formula. <br />