Question: American Psychologist study applications for the university positions in experimental Psychology. One of the objective of the analysis was to identify problems and errors (e.g., not submitting at least three letters of recommendations) in the application packages. In a sample of 148 applications for the positions, 30 applications failed to provide any letters of recommendation. Estimate, with 90% confidence, the true fraction of applications for the university positions in experimental psychology that failed to provide letters of recommendations. Interpret the results.