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d.magna-Mountain Coal Co.-1/4/01 <br />Program run on 01-08-2001 at 14:32:19 <br />' RESULTS CALCULATED USING THE BINOMINAL METHOD <br />------------------------------------------------- <br />' CONC. NUMBER NUMBER PERCENT <br />EXPOSED DEAD DEAD <br /> ---------- <br />100 ------------- <br />20 -------------- <br />7 ------------ <br />35.00 <br /> 75 20 6 30.00 <br /> 50 20 4 20.00 <br /> 25 20 1 5.00 <br />' 1.9 20 0 0.00 <br />-------------------- <br />BINOMIAL <br />PROB.(PERCENT) <br />-------------------- <br />13.1588 <br />5.7659 <br />0.5909 <br />0.0020 <br />LESS THAN 0.001 <br />AT A CONFIDENCE LEVEL OF 95 PERCENT, THE BINOMIAL TEST <br />' SHOWS THAT THE LC50 IS ABOVE 50 <br />THE USEFULNESS OF ANY LC50 CALCULATED FROM THIS SET OF DATA <br />' IS QUESTIONABLE BECAUSE A CONCENTRATION-EFFECT RELATIONSHIP <br />HAS NOT BEEN DEMONSTRATED OVER A REASONABLE RANGE (e.q. <br /><37 TO>63 OF PERCENT DEAD <br />' NEITHER THE APPROXIMATE LC50 CALCULATION NOR THE MOVING <br />AVERAGE METHOD CAN BE USED WITH THIS SET OF DATA. <br />EITHER THE HIGHEST CONCENTRATION KILLED LESS THAN 50 <br />' PERCENT OR THE LOWEST KILLED MORE THAN 50 PERCENT. <br />IF THE PROBIT SLOPE IS NEGATIVE, ENTER THE DATA AGAIN <br />USING THE NUMBER ALIVE INSTEAD OF THE NUMBER DEAD. <br />RESULTS CALCULATED USING THE PROBIT METHOD <br />GOODNESS OF FIT <br />ITERATIONS G H CHI-SQUARE PROBABILITY <br />5 0.610 1.000 0.205 0.977 <br />SLOPE = 2.029354 I <br />95 PERCENT CONFIDENCE LIMITS = .4449651 AND 3.613743 <br />LC50 = 143.193 <br />95 PERCENT CONFIDENCE LIMITS = 91.04819 AND 2765.316 <br />LC1 = 10.22343 <br />95 PERCENT CONFIDENCE LIMITS = 1.413808E-02 AND 23.92425 <br />COMPARE RESULTS WITH ORIGINAL DATA TO SEE IF THEY ARE <br />REASONABLE. <br />