Exhibit 11-9
The results of a recent poll on the preference of teenagers regarding the types of music they listen to are shown below.
$$\begin{array} { l c c }
&&\text { Teenagers Favoring }\
\text { Music Type } & \text { Teenagers Surveyed } & \text { This Type } \
\text { Pop } & 800 &384 \
\text { Rap } & 900 & 450\
\end{array}$$
-Refer to Exhibit 11-9. The standard error of is
A) 0.48
B) 0.50
C) 0.03
D) 0.0243

Question

Exhibit 11-9
The results of a recent poll on the preference of teenagers regarding the types of music they listen to are shown below.
 $$\begin{array} { l c c } 
&&\text { Teenagers Favoring }\
\text { Music Type } & \text { Teenagers Surveyed } & \text { This Type } \
\text { Pop } & 800 &384 \
\text { Rap } & 900 & 450\
\end{array}$$
-Refer to Exhibit 11-9. The standard error of is
A) 0.48
B) 0.50
C) 0.03
D) 0.0243

Quizplus · Accepted Answer

The standard error is calculated using the formula for the standard error of a proportion: SE = sqrt[p(1-p)/n]. For Pop: p = 384/800 = 0.48, SE = sqrt[0.48(1-0.48)/800] = 0.0175. For Rap: p = 450/900 = 0.50, SE = sqrt[0.50(1-0.50)/900] = 0.0167. The closest choice is D) 0.0243, which is a typical standard error value for such proportions.

Exhibit 11-9 the Results of a Recent Poll on the Preference

Exhibit 11-9
the Results of a Recent Poll on the Preference