A stratified simple random sample has been taken with the following results. 
a.Determine a point estimate for the mean of the population.
b.Estimate the standard error of the mean.
c.Approximate a 95% confidence interval for the population mean.
d.Compute the population total.
e.Determine a 95% confidence interval for the population total.
Definitions:
Capital Gains
The profit earned from the sale of an asset or investment, which is the difference between the selling price and the purchase price.
Marginal Tax Rates
The rate at which an individual's or entity's additional income is taxed.
Total Tax
The aggregate amount of taxes owed by an individual or corporation, including federal, state, local, and other applicable taxes.
Provincial Tax Brackets
Tax levels set by provincial governments, where income tax rates vary based on the income bracket a taxpayer falls into.
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