A simple random sample of 6 recent graduates revealed the following information about their weekly incomes.
$\begin{array}{lr}\text { Graduates }&\text { Weekly Income }\
\mathrm{A} & \$ 250 \
\mathrm{~B} & 270 \
\mathrm{C} & 285 \
\mathrm{D} & 240 \
\mathrm{E} & 255 \
\mathrm{~F} & 290
\end{array}$
a. What is the expected value of the average weekly income of all the recent graduates?
b. What is the expected value of the standard deviation for the population?

Question

A simple random sample of 6 recent graduates revealed the following information about their weekly incomes.
 $\begin{array}{lr}\text { Graduates }&\text { Weekly Income }\
\mathrm{A} & \$ 250 \
\mathrm{~B} & 270 \
\mathrm{C} & 285 \
\mathrm{D} & 240 \
\mathrm{E} & 255 \
\mathrm{~F} & 290
\end{array}$ 
a. What is the expected value of the average weekly income of all the recent graduates?
b. What is the expected value of the standard deviation for the population?

Quizplus · Accepted Answer

The Answer of A simple random sample of 6 recent graduates revealed the following information about their weekly incomes.
 $\begin{array}{lr}\text { Graduates }&\text { Weekly Income }\
\mathrm{A} & \$ 250 \
\mathrm{~B} & 270 \
\mathrm{C} & 285 \
\mathrm{D} & 240 \
\mathrm{E} & 255 \
\mathrm{~F} & 290
\end{array}$ 
a. What is the expected value of the average weekly income of all the recent graduates?
b. What is the expected value of the standard deviation for the population?

A Simple Random Sample of 6 Recent Graduates Revealed the Following