Self-reported gun ownership

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Self-Reported Gun Ownership. 

According to a Gallup poll about gun ownership, in the year 2016, 270 out of 600 (45%) U.S. households answered "yes" to the question: "Do you have a gun in your home?".

 

  1. Explain why the requirements for constructing a confidence interval for a proportion are satisfied.
  2. Construct a 90% confidence interval for the proportion of households who own a gun in the year 2016.
  3. Interpret your confidence interval in part "c". (I am ____% confident that.........).
  4. Sample Size: A politician wants to know if the proportion of U.S. households who own a gun is on the rise. What size sample should be obtained if the politician wants an estimate within 3 percentage points of the true proportion with 95% confidence if he uses the 2016 estimate of 37.7% (use formula pg. 401)?

Reference no: EM132394869

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