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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Concept explainers

2-Proportion Test
In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.
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In a Pew Research poll, 287 out of 522 randomly selected U.S. men were able to identify Egypt when it was highlighted on a map of the Middle East. When 520 randomly selected U.S. women were asked, 233 were able o do so. Let Pi and p be the proportion of all inen and women who can identify Egypt on a map. Construct and interpret a 95% confidence interval for p (0.448)(0.52) 820 (0.55)(0.45) 0.102 1.90V 622 0.102 1.645 V (0.56)(0.45) (0.448)(0.552) 620 0.102 1.645 V 70.448)(0.652) 620 O 0.102 1.96 (0448)(0.662) 620 822 O 0.102 1.00 (0.490)(0.501) 1042
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Transcribed Image Text:In a Pew Research poll, 287 out of 522 randomly selected U.S. men were able to identify Egypt when it was highlighted on a map of the Middle East. When 520 randomly selected U.S. women were asked, 233 were able o do so. Let Pi and p be the proportion of all inen and women who can identify Egypt on a map. Construct and interpret a 95% confidence interval for p (0.448)(0.52) 820 (0.55)(0.45) 0.102 1.90V 622 0.102 1.645 V (0.56)(0.45) (0.448)(0.552) 620 0.102 1.645 V 70.448)(0.652) 620 O 0.102 1.96 (0448)(0.662) 620 822 O 0.102 1.00 (0.490)(0.501) 1042
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