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I for a Normal Probability Distribution, About 95 Percent of the Area

question 85

Multiple Choice

i. For a normal probability distribution, about 95 percent of the area under normal curve is within
Plus and minus two standard deviations of the mean and practically all (99.73 percent) of the area
Under the normal curve is within three standard deviations of the mean.
ii. The total area under the normal curve is 100%.
iii. The mean of a normal probability distribution is 500 and the standard deviation is 10.
About 95 percent of the observations lie between 480 and 520.


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Payroll Tax Expense

Taxes that an employer is responsible for paying on behalf of its employees, which can include federal and state income taxes, Social Security, and Medicare taxes.

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The amount due for Federal Insurance Contributions Act taxes, which fund Social Security and Medicare, required to be paid by employers and employees.

Interstate Commerce

Refers to any work involving or related to the movement of goods or services across state lines within the United States.

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The standard rate of pay per hour for a worker before any overtime or bonuses are added.

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