Question

There were approximately 28 million adults on Canada when a survey was conducted. In an online survey, 1008 Canadians took part. 68% said that the penny should be abolished. If the margin of error was +- 3.1%, give an upper and lower estimate for the number of Canadian adults that would agree that the penny should be taken out of circulation.

Answer 1

Add up the 28 million and 1008 (i that is what the +- 3.1% refers to) and then find 2 numbers one that is +3.1% of that total and the other is -3.1%.