A 2016 Pew Research poll found that 61% of U.S. adults believe that organic produce is better

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A 2016 Pew Research poll found that 61% of U.S. adults believe that organic produce is better for health than conventionally grown varieties. Assume the sample size was 1000 and that the conditions for using the CLT are met.

a. Find and interpret a 95% confidence interval for the proportion of U.S. adults to believe organic produce is better for health.

b. Find and interpret an 80% confidence interval for this population parameter.

c. Which interval is wider?

d. What happens to the width of a confidence interval as the confidence level decrease?

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Introductory Statistics Exploring The World Through Data

ISBN: 9780135163146

3rd Edition

Authors: Robert Gould, Rebecca Wong, Colleen N. Ryan

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Question Posted: Jul 14, 2021 03:53 AM

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A 2016 Pew Research poll found that 61% of U.S. adults believe that organic produce is better

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