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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 36 recent charterholders and computes a mean salary of $162,000 with a standard deviation of $36,000. Use this sample information to determine the 90% confidence interval for the average salary of a CFA charterholder. Note: Round your final answers to the nearest whole number