In each of the following cases, compute 95 percent, 98 percent, and 99 percent confidence intervals for the population proportion p. (Round your answers to 3 decimal places.)

(a) = .6 and n = 120
95 percent confidence intervals is [ , ]
98 percent confidence intervals is [ , ]
99 percent confidence intervals is [ , ]

(b) = .3 and n = 360
95 percent confidence intervals is [ , ]
98 percent confidence intervals is [ , ]
99 percent confidence intervals is [ , ]
(c) = .9 and n = 120