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What is the population mean

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Reference no: EM131717753

Please help me with the formula and values for the following:

If the standard deviation of a population is 2.14 and your sample mean is 6, and you know that 15.1% of the population would be below your sample, what is the population mean?

The answer is 8.21 but I need help setting the problem up (by hand).

Reference no: EM131717753

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