Suppose That,on Average,electricians Earn Approximately µ = $54,000 Per Year

Multiple Choice

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.What is the probability that the average salary of four randomly selected electricians is less than $50,000?

A) 0.2514
B) 0.3707
C) 0.6293
D) 0.7486