1 files changed, 58 insertions, 0 deletions
diff --git a/3513/CH6/EX6.8/Ex6_8.sce b/3513/CH6/EX6.8/Ex6_8.sce
new file mode 100644
index 000000000..35fc08ec3
--- /dev/null
+++ b/3513/CH6/EX6.8/Ex6_8.sce
@@ -0,0 +1,58 @@
+//Determine the control limits for X -R chart.
+//page no 119
+clear
+clc;
+USL = 175;
+LSL = 135;
+n = 5;
+K = 50;
+X1 = 7660;
+R1=880;
+X2=X1/K;
+R2=R1/K;
+A2 = 0.58;
+d2 = 2.326;
+D3 = 0.0;
+D4 = 2.11;
+//Control limits for R-chart
+UCL = D4*R2;
+mprintf("\UCL = %.2f \n",UCL);
+LCL = D3*R2;
+mprintf("\LCL = %.2f \n",LCL);
+CL = R1;
+mprintf("\CL = %.2f \n",CL);
+//Control limits for X -chart
+UCL = X2+A2*R1;
+mprintf("\UCL = %.2f \n",UCL);
+LCL = X2-A2*R1;
+mprintf("\LCL = %.2f \n",LCL);
+CL = X2;
+mprintf("\CL = %.2f \n",CL);
+X2 = 153.2;
+sd=R2/d2;
+UNTL = X2+3*sd;
+LNTL = X2-3*sd;
+mprintf("\UNTL = %.2f \n",UNTL);
+mprintf("\LNTL = %.2f \n",LNTL);
+USL = 175;
+LSL = 135;
+Z=(LSL-CL)/sd;
+pr1 = 0.81; //probability
+mprintf("\n Hence probability = %.2f \n",pr1);
+Z=(USL-CL)/sd;
+pr2 = 99.8; //probability
+mprintf("\n Hence probability = %.2f \n",pr2);
+R=100-pr2;
+R2=pr1+R;
+mprintf("\n Total portion of the product which does not confirm with the specifications = %.2f \n",R2);
+//(c)
+Cl=155;
+Z=(LSL-CL)/sd;
+pr1 = 0.41; //probability
+mprintf("\n Hence probability = %.2f \n",pr1);
+Z=(USL-CL)/sd;
+pr2 = 99.59; //probability
+mprintf("\n Hence probability = %.2f \n",pr2);
+R=100-pr2;
+R2=pr1+R;
+mprintf("\n The total rejections will be = %.2f \n",R2);