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1)A. Choudhurys bowling ball factory in Illinois makes bowling balls of adult size and weight only. The standard deviation in the weight of a bowling ball produced at the factory is known to be 0.18 pounds. Each day for 24 days, the average weight, in pounds, of 9 of the bowling balls produced that day has been assessed as follows Average (Ib.) Average (lbAverage (lb.)Average (lb.) Day 13 14 15 16 17 18 Day 19 20 21 Day Day 16.3 16.1 15.6 15.9 15.6 16.1 15.6 15.7 15.8 15.9 15.8 15.9 15.7 15.7 15.7 16.1 15.7 15.7 15.8 15.9 15.6 15.6 15.8 16.1 9 10 23 24 12

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daviahwn Tx--드 * standaad d.wntuh ? sann panreama NT χ-/16.3 + 16-1 + 156+157 t ls.6+ 16-1 t [SG+ 153 + IS.gt 15-9t is.θ十 IS. 9 + 157 t IS. 구+ 15a + IA 24 5. 82 VCL= 1582 t 2x .06 e 15.94 LCL 15.62 2x 0 15. VCL 53o =IS 1564 -Sigma 거-cha

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