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Suppose That, on Average, Electricians Earn Approximately µ = $54,000

Question 42

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) 0.2525
B) 0.3707
C) 0.6293
D) 0.7486

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