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1 <br />1 <br /> <br />t <br /> <br /> <br /> <br />AppertQix A - l998 & 1997 VeRetmiort SnmplirsR Dana <br />One sample t-test, 1997 Vegetation Cover Data, Phase N Reclaimed Area <br />Phase IV Reclaimed Area <br />x = 48.53 <br />s = 5.95 <br />s„ = 1.53 <br />n = 15 <br />Big Sagebrush Reference Area <br />x = 51.47 <br />s = 4.22 <br />n = 15 <br />(1.) t-test =[(51.47)(0.9) - 48.53)/1.53] _ -1.44 <br />(2.) t~ _ [a = .10, (n-1) d.f.] = 1.345 <br />' Conclusion: The calculated t value of -1.44 s 1.345, the I-io is not rejected; the conclusion is that <br />the reclaimed vegetative cover of the Phase IV area is not less than 90% of the reference area <br />standard. <br />' Production- 1998 <br />1 <br /> <br /> <br /> <br /> <br />1 <br />1 <br /> <br />Production values in the two reclaimed areas exceeded the reference area value, therefore <br />hypothesis testing was not required (Table A-5). Sample adequacy was determined in the field <br />by lumping the production values of reclaimed Phase areas I, II, and III and anlyzing Area IV <br />separately. All production data for 1998 are presented in Tables A-13, A-14, and A-15. <br />' A-13 <br />