The Gallup Poll interviews 1600 people. Of these, 18% say that they jog regularly. The news report adds: "The poll has a 95% confidence level and a margin of error of 3%." You can safely conclude that...

Extracted text: The Gallup Poll interviews 1600 people. Of these, 18% say that they jog regularly. The news report adds: "The poll has a 95% confidence level and a margin of error of 3%." You can safely conclude that ... 95% of the population jog regularly between 15% and 21% of the time. We are sure the proportion of adults that jog regularly is between 15% and 21%. We are 95% confident the true portion of people that regulary jog is between 15% a and 21%. d. There is a 95% probability that the true proportion of adults that jog regularly is between 15% and 21%.