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Exercise 11

Avg difficulty 3.0

National Health Plan, Part I. A Kaiser Family Foundation poll for US adults in 2019 found that 79% of Democrats, 55% of Independents, and 24% of Republicans supported a generic “National Health Plan”. There were 347 Democrats, 298 Republicans, and 617 Independents surveyed.

  1. A political pundit on TV claims that a majority of Independents support a National Health Plan. Do these data provide strong evidence to support this type of statement?

  2. Would you expect a confidence interval for the proportion of Independents who oppose the public option plan to include 0.5? Explain.

Diez, Barr & Çetinkaya-Rundel, OpenIntro Statistics, Inference for categorical data, End-of-Chapter Exercises, Exercise 11

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Adapted from OpenIntro Statistics © 2019 David Diez, Mine Çetinkaya-Rundel & Christopher D. Barr. Licensed under CC BY-SA 3.0. Source: OpenIntro Statistics. Imported at revision fee2509.