Random samples of 900 people in the United States and in Great Britain indicated that 60% of the people in the United States were positive about the future economy, whereas 66% of the people in Great Britain were positive about the future economy. Does this provide strong evidence that the people in Great Brit- ain are more optimistic about the economy?

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A: Here α=0.002 n=54 x=19

Q: Many investors and financial analysts believe the Dow Jones Industrial Average (DJIA) gives a good…

A: Given information

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A: Given : x= 33  n =72 p= 0.51

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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.