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Determine a 99% confidence interval for the true proportion

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A random sample of 135 dentists indicated that 84 recommended sugarless gum for their patients that chew gum. What is a 99% confidence interval for the true proportion of dentists in the population that would make such a recommendation?

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The solution describes the steps to determine a 99% confidence interval for the true proportion of dentists in the population.

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Since sample size is large, we will use z statistics. A 99% confidence level will include ...

Solution provided by:
Lokesh Jain, MSc
Education
  • BEng (Hons) , Birla Institute of Technology and Science, India
  • MSc (Hons) , Birla Institute of Technology and Science, India
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