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From random sample of 900 taxpayers in Australia, the average weekly earnings was $1700 and the standard deviation was $300. Find and interpret a 95%

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From random sample of 900 taxpayers in Australia, the average weekly earnings was $1700 and the standard deviation was $300. Find and interpret a 95% confidence interval for the average weekly earnings of all Australian taxpayers. You need to show all details including checking the assumptions. Write the lower limit and the upper limit of the interval up to 2 decimal places

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