CONTROL CHARTS APPLYING A SEQUENTIAL TEST AT FIXED SAMPLING INTERVALS 18- 18 14 12 2 045 01015 0203035 Y FIGURE 4.Plots of SSATS/d ys.y for the SPRT Chart FIGURE 5.Plots of SSATS/d vs.for the SPRT Chart with=d.and for6=0.25.0.35,0.50.0.75.and1n =1.00.1.25.1.50.2.00.2.50.and Control ARL=250 Vol.29.No.1.January 1997 Joural of Quality Technology Reproduced with permission of the copyright owner.Further reproduction prohibited without permission.Reproduced with permission of the copyright owner. Further reproduction prohibited without permission