A recent study by Pew Research randomly sampled 456 working adults ages 18-34 and asked them if they were dissatisfied with their job.Of the adults sampled, 234 said "yes".Is the sample size large enough to compute a confidence interval for the proportion of adults ages 18-34 who are dissatisfied with their job?

I answered yes, according to the large sample size test: n(1-p^)>10.

Referring to the previous question. Pew Research reported a margin of error of 2.5% for 98% confidence. What is the 98% confidence interval for the proportion of adults ages 18-34 who are dissatisfied with their job?

I am not sure how to solve this question. Would you go step by step in solving it? This way I can replicate it. Thank you.