8. Federal Income Tax Returns. The Wall Street Journal reports that 33% of taxpayers with adjusted gross incomes between $30,000 and $60,000 itemized deductions on their federal income tax return. The mean amount of deductions fccrr this population of taxpayers was $16,642. Assume that the standard deviation is =$2,400. LO 5 a. What are the sampling distributions of x for itemized deductions for this population of taxpayers for each of the following sample sizes: 30,50,100, and 400 ? b. What is the advantage of a larger sample size when attempting to estimate the population mean