The U.S. Customs Service conducted a random check of Miami longshoremen and found that 36 of 50 had arrest records. Construct a 90 percent confidence interval for the true proportion. (See U.S. News &...

The U.S. Customs Service conducted a random check of Miami longshoremen and found that 36 of 50 had arrest records. Construct a 90 percent confidence interval for the true proportion. (See U.S. News & World Report 123, no. 22 [December 8, 1997].)