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Please solve this questions and please tell me how it works. Problems 15-19. Let p be the population proportion for the given condition. Savings In

Please solve this questions and please tell me how it works.

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Problems 15-19. Let p be the population proportion for the given condition. Savings In a survey of 5, 208 U.S. adults, 3, 872 say they have saved part of their salary over the last 12 months. 15. What is the point estimate, p, for p? 16. What is the point estimate, q, for q? 17. Construct the 95% confidence interval for the population proportion p. 18. Construct the 99% confidence interval for the population proportion p. 19. Which interval is wider

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