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Western Fuels 011 Accelerated #1 Sept. 2008 <br />Program run on 10-06-2008 at 08:27:38 <br />r-SULTS CALCULATED USING THE BINOMINAL METHOD <br />CONC. NUMBER NUMBER PERCENT BINOMIAL <br /> EXPOSED DEAD DEAD PROB.(PERCENT) <br />---------------------------- <br />--------- <br />100 --------------- <br />40 -------------- <br />8 -------------- <br />20.00 0.0091 <br />75 40 6 15.00 LESS THAN 0.001 <br />50 40 3 7.50 LESS THAN 0.001 <br />25 40 1 2.50 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 />.3 0.454 1.000 0.788 0.852 <br />SLOPE = 1.467393 <br />95 PERCENT CONFIDENCE LIMITS = <br />LC50 = 401.1119 <br />95 PERCENT CONFIDENCE LIMITS = <br />LC1 = 10.42165 <br />95 PERCENT CONFIDENCE LIMITS = <br />4788656 AND 2.45592 <br />174.3736 AND 22416.87 <br />2738196 AND 22.3578 <br />COMPARE RESULTS WITH ORIGINAL DATA TO SEE IF THEY ARE <br />REASONABLE.