You may need to use the appropriate appendix table or technology to answer this question. Consider the following results for independent samples taken from two populations. Sample 1 Sample 2 n1 = 400 : = 300 P1 = 0.52 P2 = 0.32 (a) What is the point estimate of the difference between the two population proportions? (Use P - P2.) (b) Develop a 90% confidence interval for the difference between the two population proportions. (Use P - P2. Round your answer to four decimal places.) to (c) Develop a 95% confidence interval for the difference between the two population proportions. (Use P - P2. Round your answer to four decimal places.) to