Page 1 : 5.10.3 Problems :, 16. The following data refers to visual detects found during, , inspection of 10 samples of size 100 each. Use them to obtain contro}, , limits for No. of defectives. Draw the control chart and state your, [S.U. Ap.13], , conclusion., Sample No.: 1 2 3 4 aid ee S10, , No. of defectives: 4 8 1 Bn Vag, wee oes O, (Ans. CL,, = 8.5, UCL,, = 16.87, LCL,, = 0.13, under contro! ), , 17. Draw suitable control chart and comment on state of process, (Given that Sample size = 100). [S.U. Ap.12], Sample No.: Ar 2 3 qr OS Ot ae, , No. ofdefectives: 12 14 20 12 15 10 10 4, (Ans. CL, = 12.125, UCL, = 22.77, LCL, = 2.33, under control ), , 18. In acertain sampling inspection, the number of defectives found, , _in 10 samples of 100 each are given below., , 16, 18°.71.,°18, 29% 10, TEs 17,2150, , Do these indicate that the quality characteristic inspected is under, Statistical control. [S.U. Ap. 05, Ap.07, Nov.11,Dec.13], , (CL, = 15, UCL, = 25.71, LCL, = 4.28, out of contro! ), , 19. Acompany produces bolts, the number of defective bolts found, in the inspection of 25 lots of 50 each are given below., (Dy thy BPA ePAL 2) AL 218: Ab 3242 OndeSnd aut, 3.14)6, Construct an appropriate chart., (Ans. np - chart, ‘CL = 3.28, UCL = 8.53, LCL =- 1.97 ~0), 20. Each day a sample of 50 items from a production process was, mined. The number of defectives found in each sample was as follows