What is the amount of marginal ordinary income tax rate for single in which the range is $8,351– $33,950?
create table table_11647327_2 (marginal_ordinary_income_tax_rate varchar, single varchar, PRIMARY KEY (marginal_ordinary_income_tax_rate))
select count(marginal_ordinary_income_tax_rate) from table_11647327_2 where single = "$8,351– $33,950"