The Following Table Shows the Results of a Survey of Authors

question 237

Short Answer

The following table shows the results of a survey of authors by a (fictitious) publishing company: $$\begin{array} { | l | l | l | l | } \hline & \text { New Authors } & \begin{array} { l } \text { Established } \\\text { Authors }\end{array} & \text { Total } \\\hline \text { Successful } & 5 & 25 & 30 \\\hline \text { Unsuccessful } & 15 & 55 & 70 \\\hline \text { Total } & 20 & 80 & 100 \\\hline\end{array}$$
Consider the following events:
S: An author is successful; U: An author is unsuccessful; N: An author is new; and E: An author is established.
Are the events S and N mutually exclusive

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Definitions:

Straight-Line Method

A depreciation method where the same amount of depreciation expense is allocated evenly over the useful life of an asset.

Interest Method

A technique used in accounting and finance to calculate the interest income or expense on bonds and loans over their life.

Unamortized Premium

The portion of the bond premium that has not yet been amortized or allocated as an expense over the bond's life.

Straight-Line Method

A depreciation method that allocates an equal portion of the initial cost of an asset to each accounting period over its useful life.