Answer
The 95% CI for those who believe television is a necessity is given by Lower Bound: 0.450; Upper Bound: 0.512
Work Step by Step
The 95% CI for those who believe that television is a luxury they could do without is given by Lower Bound: 0.488; Upper Bound: 0.550
To find 95% CI for those believe that television is a necessity:
Upper Bound: 1 - 0.488 = 0.512
Lower Bound: 1 - 0.550 = 0.450