Confidence Intervals for Population Proportion: Videos & Practice Problems

The Digital Trust Institute conducts an annual survey. In the $2024$ study, $847$ U.S. adults were polled; $53\%$ say they trust online transactions, and the remainder were not sure. What is the minimum sample size needed to estimate, with $95\%$ confidence, the true proportion of U.S. adults who trust online transactions, to within $\pm 4\%$ of the population proportion?