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1. In a sample of 144 Canadians, proportion of people who had income less than $20000 is 0.24. Is there sufficient evidence that proportion of

1. In a sample of 144 Canadians, proportion of people who had income less than $20000 is 0.24. Is there sufficient evidence that proportion of Canadians who had income less than $20000 is less than 0.25 at 95% confidence level.

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