Confidence Interval

In a survey of 2383 U.S. adults, 1073 think that there should be more government
regulation of oil companies.
(a) Construct a 95% confidence interval for the population proportion p of U.S.
adults who think that there should be more government regulation of oil
companies. (Be sure to verify that the assumptions are met for the procedure
you use.)
(b) Find the minimum sample size needed to estimate p that ensures with 99%
confidence that the estimate is accurate within 3% (E = 0.03) of the population
proportion. Use p hat = q hat = 0.5 in your calculation.