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) An auditor wants to estimate what proportion of a bank's commercial loan files are incomplete. The auditor wants to be within 4% of the true...
) An auditor wants to estimate what proportion of a bank’s commercial loan files are incomplete. The auditor wants to be within 4% of the true proportion when using a 95% confidence level. How many files must the auditor sample? No estimate of the proportion is available, so use 0.5 for the population proportion