SUMMARY

The non-predominance of the main categories of Main Professor and Lecturer, with a group of professors mostly in the category of Assistant was pointed out in the variable Teachers, as weakness of the faculties in the auto evaluation process of Stomatology and Medicine undergraduate studies for their accreditation in the University of Medical Sciences of Matanzas in Cuba; it motivated the estimation of a confidence interval for the true value of the percent of teachers with category of Assistant in the University staff with the aim of holding a position based on a solid and simple method, on the rank of values where possibly is the real value, using the standard and Wilson´s interval formula.

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