The gallup poll interviews 1600 people. of these, 18% say that they jog regularly. the news report adds: "the poll had a margin of error of plus or minus three percentage points." you can safely conclude thata. 95% of all gallup poll samples like this one give answers within ±3% of the true population value.b. the percent of the population who jog is certain to be between 15% and 21%.c. 95% of the population jog between 15% and 21% of the time.d. we can be 3% confident that the sample result is true.e. if gallup took many samples, 95% of them would find that exactly 18% of the people in the sample jog.