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+// To determine percentage of specimens
+//page no 22
+clear
+clc;
+m=118.5;// volts mean
+sd=1.2;// volts psi
+p1=0.0188;//The probability from tables
+p1=p1*100;
+x=116;
+z=x-(m/sd);
+p2=0.8944;//The probability from tables
+p2=p2*100;
+p=p2-p1;
+mprintf("Therefore the percentage of specimen falling between 116 and 120 volts = %.2f percentage",p);
+//(b)
+p=1.2; //The probability from tables
+x=115;
+z=1.404;
+m=115+z;
+av=m-z
+mprintf("\nThe adjustment is 116.404 – 115 = %.2f Voltage",av);