The Pew Intemet and American Life Project reported on the widespread use of the Internet to search for information regarding experimental treatments or medicines. From telephone interviews of 1171
adult Internet users, it was found that 215 had searched for information on experimental treatments or medicines in the past year.
% and
• We are 98 % confident that the true proportion of adult Internet users who had searched for information on experimental treatments or medicines in the past year is between
%. (After converting to percentages, round the limits of your interval to two decimal places.)