Business, 23.10.2019 05:30 brainbean

If, in a simple random sample of voters, the sample-mean income is $45,000, the sample size is 1600, thesample standard-deviation is $4,000, what is the standard error of the sample mean? give a(n approximate)95% confidence interval for the population mean.

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If, in a simple random sample of voters, the sample-mean income is $45,000, the sample size is 1600,...

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