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Most likely there will be one 100...then with 16 people, there will be probably 2-4 above 75. Again, its random because he used d-20 but probability on 80 rolls becomes more standard. A sample size of 80 is not too bad, with 30 being the usual accepted size in most research, this is actually a good size. Then again, 1-20 is a larger size for outcome meaning more of a chance of outliers. I am confident in saying that 52% will be within ten percent of the mean.
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