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Difference between the proportion of americans

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Reference no: EM131319617

Is there any difference between the proportion of Americans who wish they were rich and the proportion of Canadians who wish they were rich? A random sample of 1,000 Americans showed that 550 wish they were rich, while a random sample of 500 Canadians showed that 225 wished they were rich.

PART a: Find a 97.5% confidence interval for the difference between the population proportions who wish they were rich.

Note: Express your answer to 4 decimal places of accuracy.

PART b. Test, at the 1% level of significance, whether the two population proportions are significantly different. Formulate and test the appropriate hypotheses. Use the critical value approach.

Reference no: EM131319617

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