Question: Determine the required minimum sample size to construct a 99% confidence interval for Population I income mean. (You may use the sample standard deviation computed from the sample in Table B as an estimate of the population standard deviation). The estimate of the population mean must be:

1. Within $1000 of the population mean. (Margin of error = $1000)
2. Within $3000 of the population mean.
3. Within $5000 of the population mean.

Compare the sample sizes for different confidence intervals.

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