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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