MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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In a poll conducted by The New York Times and CBS News, 44% of Americans approve of the job that the Supreme Court is doing (The New York Times, June 8, 2012). Assume that this percentage was true for the population of Americans at the time of this poll was conducted. A recent poll of 1339 Americans showed that 38% of them approve of the job that the Supreme Court is doing. At a 10% significance level, can you conclude that the current proportion of Americans who approve of the job that the Supreme Court is doing is different from 44%?

In a poll conducted by The New York Times and CBS News, 44% of Americans approve of the job that the Supreme Court is doing (The
New York Times, June 8, 2012). Assume that this percentage was true for the population of Americans at the time of this poll was
conducted. A recent poll of 1339 Americans showed that 38% of them approve of the job that the Supreme Court is doing. At a 10%
significance level, can you conclude that the current proportion of Americans who approve of the job that the Supreme Court is doing
is different from 44%?
Round your answers to two decimal places.
Zobserved = i
Zcritical left
i
Zeritical right
We
the null hypothesis.
We conclude that the current proportion of Americans who approve of the job that the Supreme Court is doing is
44%.
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Transcribed Image Text:In a poll conducted by The New York Times and CBS News, 44% of Americans approve of the job that the Supreme Court is doing (The New York Times, June 8, 2012). Assume that this percentage was true for the population of Americans at the time of this poll was conducted. A recent poll of 1339 Americans showed that 38% of them approve of the job that the Supreme Court is doing. At a 10% significance level, can you conclude that the current proportion of Americans who approve of the job that the Supreme Court is doing is different from 44%? Round your answers to two decimal places. Zobserved = i Zcritical left i Zeritical right We the null hypothesis. We conclude that the current proportion of Americans who approve of the job that the Supreme Court is doing is 44%.
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