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Rates for a couple filing a joint tax return are 10% up to $16,750 and 15% thereafter up to $68,000. William and Dana Souza earned combined gross income of $67,000. They took the standard deduction of $11,400 for a married couple filing a joint return and exemptions of $3,650 each for themselves and their three children. Compute the amount of income tax before credits.
Confidence Interval
A continuum of estimates, garnered from sample data analysis, presumed likely to contain the concealed value of a population trait.
Population Mean
The average of a set of numerical values of an entire population.
Observations
Data collected during an experiment or survey; each observation represents an individual unit of measured data.
Confidence Levels
The probability or percentage that specifies how confident one can be in the method used to construct a confidence interval estimate of a population parameter.
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