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For the year 2 0 1 0 , 3 3 % of taxpayers with adjusted gross incomes between $ 3 0 , 0 0 0
For the year of taxpayers with adjusted gross incomes between $ and $ itemized deductions on their federal income tax return. The mean amount of deductions for this population of taxpayers was $ Assume that the standard deviation is sigma $ If required, round your answer to two decimal places.
a What are the sampling errors of x for itemized deductions for this population of taxpayers for each of the following sample sizes: and
Ex $
n sigma x
$
$
$
$
b What is the advantage of a larger sample size when attempting to estimate the population mean?
A larger sample
Select your answer
the standard error and results in an
Select your answer
precise estimate of the population mean.
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