How often do they play? Refer to given Exercise.
(a) Find SE P^, the standard error of P^.
(b) Give the 95% confidence interval for p in the form of estimate plus or minus the margin of error.
(c) Give the confidence interval as an interval of percents.
Exercise
How often do they play? In the Pew survey described in Example 6.1, those who played video games were asked how often they played. In this subpopulation, 223 adults said that they played every day or almost every day.
(a) What is the sample size n for the subpopulation of U.S. adults who play video games?
(b) What is the count X of those who said that they played every day or almost every day?
(c) Find the sample proportion P^.