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the chartered financial analyst (cfa) designation is fast becoming a requirement for serious investment professionals. although it requires a successful completion of three levels of grueling exams, the designation often results in a promising career with a lucrative salary. a student of finance is curious about the average salary of a cfa charterholder. he takes a random sample of 16 recent charterholders and computes a mean salary of $200,000 with a standard deviation of $40,000. use this sample information to determine the 95% confidence interval for the average salary of a cfa charterholder.