Hi Reeza, You are AWESOME!! Thank you so much replying my post in less than 3 min. It is perfect. You saved my time. If you know any article where I should look at for proc mean procedure, please let me know. Thank you very much again. ... View more

See my earlier comment in which I refer to the article "Generate a random sample from a mixture distribution."    proc iml; call randseed(12345); N = 100; /* sample size */ k = ceil(0.05*N); /* 5% of sample */ x = j(N, 1); call randgen(x, "Normal", 0, 10); /* sample from N(0, 10) */ z = j(k, 1); call randgen(z, "Normal", 0, 100); /* contamination from N(0, 100) */ idx = sample(1:N, k, "NoReplace"); /* k random elements */ x[idx] = z; /* overwrite with contaminated values */ ... View more

Thank you very much! ... View more