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diff --git a/1376/CH1/EX1.22/1_22.sci b/1376/CH1/EX1.22/1_22.sci
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+//1.22
+clc;
+n=2;
+k=1;
+dof=n-k;
+chi_square=(3-5)^2/5+(7-5)^2/5;
+disp(chi_square,'Chi square value=')
+disp('From the dof and chi square value we find P=0.22')
+disp('Hence there are 22% chance that the distribution is just the result of random fluctuations and the coin may be unweighted')
+\ No newline at end of file