//Example 4.16 A random sample of 10 students of class II was selected from schools in a certain region clc; clear; x=[38 46 45 40 35 39 44 45 33 37]; n=10; m=sum(x)/n; s=sqrt(18.96); disp((m+2.26*(s/3)),"to",(m-2.26*(s/3)),"The 95% confidence limits for mean weight are "),