If a Test Has a Mean of 500 and a Standard

question 4

Essay

If a test has a mean of 500 and a standard deviation of 50 (and is normally distributed), what score marks the 15^th percentile?
a. On this same test, what proportion of students would be expected to receive scores between 475 and 550?
b. What scores fall at the extreme 10% of this distribution (two-tailed)?

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Definitions:

Double-Declining-Balance

A method of accelerated depreciation that doubles the normal depreciation rate, reducing the book value of assets more quickly in the early years.

Depreciation Expense

The allocation of the cost of a tangible asset over its useful life, which reflects the loss in value due to usage, wear and tear, or obsolescence.

Residual Value

The forecasted price an asset is likely to command at the end of its usefulness.

Component Depreciation

A method of depreciation where different components of a fixed asset are depreciated separately over their respective useful lives.