Please help with all three!

4. [-/1 Points] DETAILS ILLOWSKYINTROSTAT1 8.3.127.HW.GENERAL. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER According to a poll, 80% of California adults (406 out of 506 surveyed) feel that education is one of the top issues facing California. We wish to construct a 90% confidence interval for the true proportion of California adults who feel that education is one of the top issues facing California. Find the error bound. (Round your answer to three decimal places.) 5. [-/2 Points] DETAILS ILLOWSKYINTROSTAT1 8.3.128.HW. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Five hundred thirteen (513) homes in a certain southern California community are randomly surveyed to determine if they meet minimal earthquake preparedness recommendations. One hundred seventy-two (172) of the homes surveyed met the minimum recommendations for earthquake preparedness and 341 did not. Find the confidence interval at the 90% confidence level for the true population proportion of southern California community homes meeting at least the minimum recommendations for earthquake preparedness. (Round your answers to three decimal places. ) 6. [-/1 Points] DETAILS ILLOWSKYINTROSTAT1 8.3.129.HW. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Five hundred sixteen (516) homes in a certain southern California community are randomly surveyed to determine if they meet minimal earthquake preparedness recommendations. One hundred seventy-eight (178) of the homes surveyed met the minimum recommendations for earthquake preparedness and 338 did not. Find the point estimate for the population proportion of homes that do not meet the minimum recommendations for earthquake preparedness. (Round your answer to four decimal places.)