Statistics

City records show that 35% of all residents are over the age of 60. To test a random-digit dialing device, you have the device randomly select 200 residential numbers. Of the 200 res- idents contacted, 28% were over the age of 60. In the preceding paragraph, (select the best answer) the 35% is a (parameter, statistic). the 28% is a (parameter, statistic)