Suppose that, on average, electricians earn approximately u= $54,000 per year in the United States. Assume that the distribution for 1 6 electricians' yearly earnings is normally distributed and that the standard deviation is o = $12,000. Given a sample of four electricians, what is the standard deviation for the sampling distribution of the sample mean? 2 points Multiple Choice eBook Print References O 12,000 6,000 54,000 O O 36,000 O