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+// To determine probabilty
+//page no 24
+clear
+clc;
+n=50;
+p=0.25;
+q=0.75;
+sd=3.062;   // standard deviation
+x1=14.5;
+x2=15.5;
+x3=11.5
+p1=0.7422*100    // probability from table
+p2=0.8340*100   // probability from table
+//(a) Exactly 15 defective 
+m=n*p
+z1=((x1-m)/sd)*100
+z2=((x2-m)/sd)*100
+p=(p2-p1)
+mprintf("\nTherefore the probability Exactly 15 defective = %.2f percentage",p);
+//(b) Less than or equal to 11 defective
+z3=((x3-m)/sd)*100
+p3=37.45
+mprintf("\nTherefore the probabilityLess than or equal to 11 defective = %.2f percentage",p3);
+//(c) More than 15 or 15 defectives
+z4=((x1-m)/sd)*100
+p4=100-p1
+mprintf("\nTherefore the probability  More than 15 or 15 defectives = %.2f percentage",p4);