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Estimate the population mean

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Reference no: EM132363769

A population has a mean of 500 and a standard deviation of 50. A sample of 40 will be taken and the sample mean x¯ will be used to estimate the population mean. Assume that the population is infinite.

What is the standard deviation of x¯?

Select one:

a. 40

b. 1.25

c. 7.91

d. 50

Reference no: EM132363769

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