Random samples of 900 people in the United States and in Great Britain indicated that 60%...

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.

a. Does this information provide strong evidence that the people in Great Britain are more optimistic about the economy at 5% significance level?

b. Find a 98% confidence interval for the difference between two population proportions.

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Random samples of 900 people in the United States and in Great Britain indicated that 60%...

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