The IRS is interested in estimating the total number of tax accounts who has their own tax returns audited last year. If a random sample of 80 returns showed that 12 were audited, develop a 95%...

The IRS is interested in estimating the total number of tax accounts who has their own

tax returns audited last year. If a random sample of 80 returns showed that 12 were

audited, develop a 95% interval estimate for true proportion (population proportion) of

tax accounts who had their returns audited last year.