Homework: MAT 200 Week 6 HW Score: 76.28%, 22.88 of = Homework (Graded Question 25, 6.3.17-T 30 points Assignment) Part 1 of 3 Points: 0 of 1 Save A researcher wishes to estimate, with 95% confidence, the population proportion of adults who think Congress is doing a good or excellent job. Her estimate must be accurate within 2% of the true proportion. (a) No preliminary estimate is available. Find the minimum sample size needed (b) Find the minimum sample size needed, using a prior study that found that 32% of the respondents said they think Congress is doing a good or excellent job. (c) Compare the results from parts (a) and (b). (a) What is the minimum sample size needed assuming that no prior information is available? n = | |(Round up to the nearest whole number as needed.)