multiple choice 11-15, thank you

Question 11 (1 point) Suppose X1,...,Xn is a sample of successes and failures from a Bernoulli population with probability of success p. Let Ex=288 with n=495. Then a 80% confidence interval for p is: O a) .5818 + .0564 O b) .5818 + .0284 c) .5818 + .0434 O d) .5818 + .0129 Oe) .5818 + .0432Question 12 (1 point) Suppose x = 30, s=9 and n=200. What is the 95% confidence interval for u. O a) 19.09