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

question 14

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. Given a sample of four electricians, what is the standard deviation for the sampling distribution of the sample mean?

• A) 6,000
• B) 12,000
• C) 36,000
• D) 54,000

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Definitions:

MgO

Magnesium oxide, a white hygroscopic solid mineral that is used as a refractory material, in medication, and as a magnesium source in animal feeds.

Oxidation Number

A concept in chemistry that represents the degree of oxidation of an atom in a chemical compound, indicating the number of electrons lost or gained by an atom.

Oxidation Number

A number assigned to an atom in a chemical compound that represents the number of electrons lost or gained by the atom.

Carbon

A chemical element with symbol C and atomic number 6, fundamental to life and used in countless industrial applications.