Retries
The following table contains the probability distribution for X = the number of retries necessary to successfully transmit a 1024K data package through a double satellite media.
$$\begin{array} { | c | c c c c | }
\hline \boldsymbol { x } & 0 & 1 & 2 & 3 \
\hline \boldsymbol { p } ( \boldsymbol { x } ) & 0.35 & 0.35 & 0.25 & 0.05 \
\hline
\end{array}$$
-The covariance of two variables X and Y:
A) must be between -1 and +1.
B) must be positive.
C) can be any real number.
D) None of these choices.

Question

Retries
The following table contains the probability distribution for X = the number of retries necessary to successfully transmit a 1024K data package through a double satellite media.
 $$\begin{array} { | c | c c c c | } 
\hline \boldsymbol { x } & 0 & 1 & 2 & 3 \
\hline \boldsymbol { p } ( \boldsymbol { x } ) & 0.35 & 0.35 & 0.25 & 0.05 \
\hline
\end{array}$$
-The covariance of two variables X and Y:
A) must be between -1 and +1.
B) must be positive.
C) can be any real number.
D) None of these choices.

Quizplus · Accepted Answer

Covariance can be any real number, as it measures the degree to which two variables change together. It is not restricted to a specific range.

Retries the Following Table Contains the Probability Distribution for X

Retries
the Following Table Contains the Probability Distribution for X