13 TB MC Qu. 7-49 (Static) Suppose that, on average, electricians earn... Suppose that, on average electricians earn approximately t1: $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 a : $'l2,000 poms What is the probability that the average salary of four randomly selected electricians exceeds $60,000? Multiple Choice IF. 0 0,15 87 References O. 308 5 0,8413 . O 0.695 O