For Some Value of Z,the Probability That a Standard Normal

question 105

Multiple Choice

For some value of Z,the probability that a standard normal variable is below Z is 0.2090.The value of Z is

• A) −0.81.
• B) −0.31.
• C) 1.96.
• D) 0.31.

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Definitions:

Labor Cost

The total sum of all wages paid to employees, as well as the costs of employee benefits and payroll taxes paid by an employer.

Backflow

The reverse flow of water or other substances into the pipes of a potable water supply from any source other than its intended source.

Migration

The movement of people from one place to another, often across political or economic boundaries, for various reasons including work, education, or escape from conflict.