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

question 104

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 dollars. What is the probability that the average salary of four randomly selected electricians is more than $50,000 but less than $60,000?

• A) 0.5889
• B) 0.7486
• C) 0.8413
• D) 0.9048

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Definitions:

Actin Molecules

Protein filaments that are part of the cytoskeleton in all eukaryotic cells, playing key roles in cell movement and shape.

Anaerobic Metabolism

A form of metabolism that occurs in the absence of oxygen where energy is produced through the breakdown of glucose.

Lactate Production

The process of converting pyruvate into lactate by cells during anaerobic respiration, often occurring in muscles during intense exercise.

Fast Twitch Fibers

Muscle fibers characterized by their quick contraction and high power output, often engaged in explosive movements.