Question

The independent random variables X and Y are defined by the following probability distribution tables: X...

The independent random variables X and Y are defined by the following probability distribution tables: X 1 3 6 f(x) 0.6 0.3 0.1 Y 2 3 5 7 f(y) 0.1 0.2 0.3 0.4Determine the standard deviation of 3Y + 5

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Let X and Y be independent discrete random variables with pmf’s: x 1 2 3 y...
Let X and Y be independent discrete random variables with pmf’s: x 1 2 3 y 2 4 6 p(x) 0.2 0.2 0.6 p(y) 0.3 0.1 0.6 What is the probability that X + Y = 7
Three tables listed below show random variables and their probabilities. However, only one of these is...
Three tables listed below show random variables and their probabilities. However, only one of these is actually a probability distribution. A B C x P(x) x P(x) x P(x) 25 0.3 25 0.3 25 0.3 50 0.1 50 0.1 50 0.1 75 0.2 75 0.2 75 0.2 100 0.4 100 0.6 100 0.8 a. Which of the above tables is a probability distribution? b. Using the correct probability distribution, find the probability that x is: (Round the final answers to...
Three tables listed below show random variables and their probabilities. However, only one of these is...
Three tables listed below show random variables and their probabilities. However, only one of these is actually a probability distribution. A B C X P(X) X P(X) X P(X) 5 0.1 5 0.1 5 0.1 10 0.3 10 0.3 10 0.3 15 0.4 15 0.4 15 0.4 20 0.2 20 0.4 20 0.6 a. Which is it? (Click to select)  B  C  A b. Using the correct probability distribution, find the probability that x is: (Round the final answers to 1 decimal place.)...
A random variable x has the following probability distribution. Determine the standard deviation of x. x...
A random variable x has the following probability distribution. Determine the standard deviation of x. x f(x) 0 0.05 1 0.1 2 0.3 3 0.2 4 0.35 A random variable x has the following probability distribution. Determine the expected value of x. x f(x) 0 0.11 1 0.04 2 0.3 3 0.2 4 0.35 QUESTION 2 A random variable x has the following probability distribution. Determine the variance of x. x f(x) 0 0.02 1 0.13 2 0.3 3 0.2...
The probability distribution of a couple of random variables (X, Y) is given by : X/Y...
The probability distribution of a couple of random variables (X, Y) is given by : X/Y 0 1 2 -1 a 2a a 0 0 a a 1 3a 0 a 1) Find "a" 2) Find the marginal distribution of X and Y 3) Are variables X and Y independent? 4) Calculate V(2X+3Y) and Cov(2X,5Y)
Three tables listed below show random variables and their probabilities. However, only one of these is...
Three tables listed below show random variables and their probabilities. However, only one of these is actually a probability distribution. A B C x P(x) x P(x) x P(x) 25 0.1 25 0.1 25 0.1 50 0.3 50 0.3 50 0.3 75 0.4 75 0.4 75 0.4 100 0.2 100 0.4 100 0.6 a. Which of the above tables is a probability distribution? (Click to select)BAC b. Using the correct probability distribution, find the probability that x is: (Round the...
Three tables listed below show random variables and their probabilities. However, only one of these is...
Three tables listed below show random variables and their probabilities. However, only one of these is actually a probability distribution. A B C X P(X) X P(X) X P(X) 5 0.3 5 0.1 5 0.5 10 0.3 10 0.2 10 0.3 15 0.2 15 0.3 15 −0.2 20 0.4 20 0.4 20 0.4 b. Using the correct probability distribution, find the probability that x is: (Round the final answers to 1 decimal place.) 1. Exactly 15 =    2. No...
Consider joint Probability distribution of two random variables X and Y given as following f(x,y)   X...
Consider joint Probability distribution of two random variables X and Y given as following f(x,y)   X        2   4   6 Y   1   0.1   0.15   0.06    3   0.17   0.1   0.18    5   0.04   0.07   0.13 (a)   Find expected value of g(X,Y) = XY2 (b)   Find Covariance of Cov(x,y)
Three tables listed below show random variables and their probabilities. However, only one of these is...
Three tables listed below show random variables and their probabilities. However, only one of these is actually a probability distribution. A B C x P(x) x P(x) x P(x) 25 0.1 25 0.1 25 0.1 50 0.1 50 0.1 50 0.1 75 0.6 75 0.6 75 0.6 100 0.2 100 0.4 100 0.6 a. Which of the above tables is a probability distribution? (Click to select)  A  C  B b. Using the correct probability distribution, find the probability that x is: (Round the...
The joint probability distribution of two random variables X and Y is given in the following...
The joint probability distribution of two random variables X and Y is given in the following table X Y → ↓ 0 1 2 3 f(x) 2 1/12 1/12 1/12 1/12 3 1/12 1/6 1/12 0 4 1/12 1/12 0 1/6 f(y) a) Find the marginal density of X and the marginal density of Y. (add them to the above table) b) Are X and Y independent? c) Compute the P{Y>1| X>2} d) Compute the expected value of X. e)...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT