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WESTERN FUELS 008 MARCH 2008 PP <br />Program run on 04-11-2008 at 09:45:52 <br />RESULTS CALCULATED USING THE BINOMINAL METHOD <br />CONC. NUMBER NUMBER PERCENT BINOMIAL <br />EXPOSED DEAD DEAD PROB.(PERCENT) <br />100 40 3 7.50 LESS THAN 0.001 <br />75 40 0 0.00 LESS THAN 0.001 <br />50 40 2 5.00 LESS THAN 0.001 <br />25 40 0 0.00 LESS THAN 0.001 <br />12.5 40 1 2.50 LESS THAN 0.001 <br />AT A CONFIDENCE LEVEL OF 95 PERCENT, THE BINOMIAL TEST <br />SHOWS THAT THE LC50 IS ABOVE 100 <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.g. <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 />-------------------------------------------------------------------------------- <br />GOODNESS OF FIT <br />ITERATIONS G H CHI-SQUARE PROBABILITY <br />-------------------------------------------------------------------------------- <br />5 3.957 1.000 4.150 0.24& <br />SLOPE _ .5981868 <br />95 PERCENT CONFIDENCE LIMITS = -.5917371 AND 1.788111 <br />LC50 = 65460.59 <br />95 PERCENT CONFIDENCE LIMITS = 525.5032 AND + INFINITY <br />LC1 = 8.453976 <br />95 PERCENT CONFIDENCE LIMITS = 0 AND 37.50723 <br />COMPARE RESULTS WITH ORIGINAL DATA TO SEE IF THEY ARE <br />REASONABLE. <br />