The annual salaries of all employees at a financial company are normally distributed with a mean Mu = $34,000 and a standard deviation Sigma = $4,000. What is the z-score of a company employee who makes an annual salary of $28,000? –5 –3. 5 –1. 5 1. 5.

z-score of an employee making an annual salary of $28000 is -1.5.

It is given that,

mean μ = $34000

standard deviation σ = $4000

salary x = $28000

z-score is a numerical measurement that describes a value's relationship to the mean of values.

formulae to calculate z-score = (x - μ)/σ

so, z-score = (28000-34000)/4000

z = -1.5

therefore, the z-score of an employee making an annual salary of $28000 is -1.5.

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the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b