Solved: In Exercise 5.9, we determined that is a valid

Chapter 5, Problem 53E

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QUESTION:

In Exercise 5.9, we determined that

                                  \(f\left(y_{1}, y_{2}\right)=\left\{\begin{array}{ll}

6\left(1-y_{2}\right), & 0 \leq y_{1} \leq y_{2} \leq 1, \\

0, & \text { elsewhere }

\end{array}\right.

\)

is a valid joint probability density function. Are \(Y_{1}\) and \(Y_{2}\) independent?

Equation Transcription:

Text Transcription:

f(y_1,y_2)={_0, elsewhere ^6(1-y_2), 0</=y_1</=y_2</=1,

Y_1

Y_2

Questions & Answers

QUESTION:

In Exercise 5.9, we determined that

                                  \(f\left(y_{1}, y_{2}\right)=\left\{\begin{array}{ll}

6\left(1-y_{2}\right), & 0 \leq y_{1} \leq y_{2} \leq 1, \\

0, & \text { elsewhere }

\end{array}\right.

\)

is a valid joint probability density function. Are \(Y_{1}\) and \(Y_{2}\) independent?

Equation Transcription:

Text Transcription:

f(y_1,y_2)={_0, elsewhere ^6(1-y_2), 0</=y_1</=y_2</=1,

Y_1

Y_2

ANSWER:

Answer:

Step 1 of 1:

In Exercise  we determined that

Is a valid joint probability density function.

We need to find whether  are independent or not.

If  are continuous random variables with joint density function

and marginal density functions   respectively, then

are independent if and only if

……………..(1)

For all pairs of real numbers

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