The following table shows the results of a survey of 370 authors by a (fictitious) publishing company: $$\begin{array} { | l | l | l | l | }
\hline & \begin{array} { l }
\text { New } \
\text { Authors }
\end{array} & \begin{array} { l }
\text { Established } \
\text { Authors }
\end{array} & \text { Total } \
\hline \text { Successful } & 60 & 20 & 80 \
\hline \text { Unsuccessful } & 140 & 150 & 290 \
\hline \text { Total } & 200 & 170 & 370 \
\hline
\end{array}$$ A new author is chosen at random.
Compute the estimated probability of the event that the new author is unsuccessful.

A) $\frac { 14 } { 37 }$
B) $\frac { 7 } { 10 }$
C) $\frac { 3 } { 10 }$
D) $\frac { 20 } { 37 }$
E) $\frac { 14 } { 29 }$

Question

The following table shows the results of a survey of 370 authors by a (fictitious) publishing company: $$\begin{array} { | l | l | l | l | } 
\hline & \begin{array} { l } 
\text { New } \
\text { Authors }
\end{array} & \begin{array} { l } 
\text { Established } \
\text { Authors }
\end{array} & \text { Total } \
\hline \text { Successful } & 60 & 20 & 80 \
\hline \text { Unsuccessful } & 140 & 150 & 290 \
\hline \text { Total } & 200 & 170 & 370 \
\hline
\end{array}$$   A new author is chosen at random.
Compute the estimated probability of the event that the new author is unsuccessful.
 
A) $\frac { 14 } { 37 }$
B)   $\frac { 7 } { 10 }$
C)   $\frac { 3 } { 10 }$
D)   $\frac { 20 } { 37 }$
E)   $\frac { 14 } { 29 }$

Quizplus · Accepted Answer

The probability that a new author is unsuccessful is calculated by dividing the number of unsuccessful new authors by the total number of new authors. From the table, there are 140 unsuccessful new authors out of a total of 200 new authors, giving a probability of $\frac{140}{200} = \frac{7}{10}$.

The Following Table Shows the Results of a Survey of 370