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5.10.4 Problems :, , 23. During an examination of equal len th of ;, of defects observed are: 5, 3,426 34 4: v oo the the number, , Draw an appropriate control chart, process is under control or not ?, , ( Ans. GL... = 3.6; UCL. = 9.292 Lier. =~ 2099, , 24. Draw suitable control chart an, , and Comment whether the, [S.U. Ap. 08], = 0 ), , d State your conclusion., , No. of defects : 4 3 5 Sales Se ater: ae me, 4 6, (Ans. CL, = 4.6, UCL, = 11.03, LCL, =0) [S.U. Ap.14], , 25. Draw a suitable chart for the following data pertaining to the, number of foreign coloured threads (considered as defects) and 15 pieces, of cloth of 2M x 2M in certain make of synthetic fibre and state your, conclusion. : : ee, ?, 12, 3, 20; A1sSpSes 30,8, 0, 926% 20, (Ans. CL, = 9, UCL, = 18, LCL, =0), , 26. Ten pieces of cloth out of different rolls of equal length contain, _ the following number of defects. ~ |, 1,3, 5,0, 6 0; Gees i cs |, Draw a control chart for the number of defects and state whether, the process is in a state of statistical control. [S.U. Ap. 06], (Ans. CL. = 3.5, UCL. = 9.112, LCL, =—2.112 ~0), , 27. The following table gives the number of defects Se, Woollen carpets passing as satisfactory. Construct the control ch, , the number of defects. 3 8, Carpet No. : (ae 4 5 ote aa e 7, i. (Ans. CL @ AAs & 10. LCL, =- 2