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March 23, 2005 <br />Page 9 <br />�'able 8 <br />Comparison of Single Stream and Duai Sfream Roates <br />October <br />Single Stream (Monday) Routes' Dual 5tream (Tues-Friday) Routes 2 <br />90% Confidence 90% Confider�ce <br />Interval lnterval <br />Material � Mean � l.ower Upper � Mean <br />Category <br />Paper 77.0% 74.0% 80.0% <br />Metals 2.4% 1.8% 3.0% <br />GIaSS 5.7% 4.3% 7.�% <br />PlastiC 4.9°/a 4.1% 5.7% <br />Cantaminants 9.9% 8.8% 11.U% <br />Total3 100% n!a nla <br />' Four samples were sorted (rom the single sfream roules. <br />z Fourteen samples were sorted from the dual stream routes. <br />' The totals may not equal Ihe sum o[ the materia! caiegories due lo roundir�g. <br />63.9% <br />7.5% <br />16.4% <br />$.6°�a <br />3.5% <br />100% <br />Lower <br />56.5% <br />5.5% <br />10.9% <br />6.0% <br />2.5% <br />n/a <br />Upper <br />79.3% <br />9.5% <br />21.9% <br />11.2% <br />4.5% <br />n!a <br />Statistically <br />Significanf <br />Difference <br />� <br />d <br />✓ <br />✓ <br />✓ <br />The upper and lower confidence intervals of the September and October Monday single stream <br />pilot routes wer� significantly difFerent than the Septennber and October dual stream routes. <br />Because a statistically significant di�£erence vvas found, the median perccntages for each <br />material category that were derived frorxk the September an.d October recyclable rnaterial sorting <br />events were appiied to the averages of the pilot route tnzck weights to estimate material <br />campositions by weight. The average estimated quantities from the Septembcr single siream <br />(Monday) rontes are compared to the avezage estirnated quantities of the September dual stzeaxn <br />bi-weekly routes {Wednesday through Friday) in Table 9. <br />01-Od253-10101-0101 f R70001 i] 3500 P_113500 Ramsey Co. 2003�RTA1IZosevillclFA1$1544 - Final Data Aualysis <br />