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Business, 30.10.2019 02:31 JasonGorton22

Suppose that, on average, electricians earn approximately µ = $54,000 per year in the united states. assume that the distribution for electricians’ yearly earnings is normally distributed and that the standard deviation is σ = $12,000. given a sample of four electricians, what is the standard deviation for the sampling distribution of the sample mean? multiple choice a)6,000 b)12,000 c)36,000 d)54,000.

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