Tax Returns and Campaign Funds Tax returns include an option of designating $3 for presidential election campaigns, and it does not cost the taxpayer anything to make that designation. In a simple random sample of 250 tax returns from 1976, 27.6% of the returns designated the $3 for the campaign. In a simple random sample of 300 recent tax returns, 7.3% of the returns designated the $3 for the campaign (based on data from USA Today). Use a 0.01 significance level to test the claim that the percentage of returns designating the $3 for the campaign was greater in 1976 than it is now.