In politics, marketing, etc. we often want to estimate a percentage or proportion p. One calculation in statistical polling is the margin of error - the largest (reasonble) error that the poll could have. For
example, a poll result of 72% with a margin of error of 4% indicates that p is most likely to be between
68% and 76% (72% minus 4% to 72% plus 4%).
In a (made-up) poll, the proportion of people who like dark chocolate more than milk chocolate was
28% with a margin of error of 1.6%. Describe the conclusion about p using an absolute value
inequality
The answer field below uses the symbolic entry option in Mobius. That lets you type in a vertical bar
to represent absolute values. Also, when you type in < and then =, the symbolic entry option will