A town has 5000 residents. A survey finds that 81 residents out of a random sample of 625 residents have red hair. The margin of error for the survey is + or - 4%. Find the interval in which the total

Random survey total number=625

Residents with red hair=81

Percentage with red hair =81/625*100=13%

If you have an error of +or - 4% then you have a range of 4 percent on either side of the survery percentage that can be in error=

13%-4%=9%

13%+4%=17%

The range including error of people that have red hair out of the total number of respondents is 9%-17% with 13% being the percentage according to hardcopy survey