Help me please.

Solve the following problems. 1. Find the 99% confidence interval for the proportion of workers who are satisfied with their jobs if 340 out of 650 surveyed employees say they are satisfied with their present jobs. 2. Suppose you want to construct an 80% confidence interval for the proportion of businesses that provide incentives to their workers. If you want a margin of error of 3.5%, how many business entities must you survey