In a study of cell phone use, 799 randomly selected US teens were asked how often they talked on a cell phone and about their texting behavior. The data are summarized in the table below. Based on the data from the study, an estimate of the percent of US teens who talk on their cell phone daily is 52% and the associated margin of error is 4%. Which of the following is a correct statement based on the given margin of error?
| Texting behavior | Talks on cell phone daily | Does not talk on cell phone daily | Total |
|---|---|---|---|
| Light | 110 | 146 | 256 |
| Medium | 139 | 164 | 303 |
| Heavy | 166 | 74 | 240 |
| Total | 415 | 384 | 799 |
Approximately 4% of those who talk daily are heavy texters.
It is not possible that the percent of all US teens who talk daily is less than 48%.
The percent of all US teens who talk daily is 56%.
It is doubtful that the percent of all US teens who talk daily is 57%.
