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Standard deviation of the sampling distribution

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Reference no: EM132479260

The internal auditing staff of a local manufacturing company performs a sample audit each quarter to estimate the proportion of accounts that are more than 90 days overdue (delinquent). The historical records of the company show that over the past 8 years, the average has been that 13 percent of the accounts have been delinquent. For this quarter, the auditing staff randomly selected 250 customer accounts.

  • What are the mean and the standard deviation of the sampling distribution of?
  • What is the probability that at least 30 accounts will be classified as delinquent?

Reference no: EM132479260

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