A survey was conducted to determine if adults in the U.S., France, and Germany believed humans contribute to global warming. Of 1125 adults in the U.S., 68% believed humans contribute to global warming, of 984 adults in France, 74% believed humans contribute to global warming, and of 2707 adults in Germany, 78% believed humans contribute to global warming. (Note: Two proportions may possibly be equal if their confidence intervals overlap.) A) Construct a 99% confidence interval for the proportion of adults from the U.S. who say that humans contribute to global warming. B) Construct a 99% confidence interval for the proportion of adults from France who say that humans contribute to global warming. C) Construct a 99% confidence interval for the proportion of adults from Germany who say that humans contribute to global warming. D) Based on your results for questions A and B, is it possible that the proportion for adults in the U.S. may equal the proportion of adults in France? E) Based on your results for questions B and C, is it possible that the proportion for adults in France may equal the proportion of adults in Germany? F) Based on your results for questions A and C, is it possible that the proportion for adults in the U.S. may equal the proportion of adults in Germany?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A survey was conducted to determine if adults in the U.S., France, and Germany believed humans contribute to global warming. Of 1125 adults in the U.S., 68% believed humans contribute to global warming, of 984 adults in France, 74% believed humans contribute to global warming, and of 2707 adults in Germany, 78% believed humans contribute to global warming. (Note: Two proportions may possibly be equal if their confidence intervals overlap.) A) Construct a 99% confidence interval for the proportion of adults from the U.S. who say that humans contribute to global warming. B) Construct a 99% confidence interval for the proportion of adults from France who say that humans contribute to global warming. C) Construct a 99% confidence interval for the proportion of adults from Germany who say that humans contribute to global warming. D) Based on your results for questions A and B, is it possible that the proportion for adults in the U.S. may equal the proportion of adults in France? E) Based on your results for questions B and C, is it possible that the proportion for adults in France may equal the proportion of adults in Germany? F) Based on your results for questions A and C, is it possible that the proportion for adults in the U.S. may equal the proportion of adults in Germany?

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