Compute the standard deviation, Applied Statistics

Let X, Y, and Z refer to the three random variables. It is known that Var(X) = 4, Var(Y) = 9, and Var(Z) = 16. It is further known that E(X) = 1, E(Y) = 2, and E(Z) = 4. Furthermore E(XY) = 7, E(XZ) = 12, and E(YZ) = 15.

Problem . Find Var(X-Y)

Problem . Find Corr(X,Z)

Problem . Find Cov(2X+Y,4Z)

Problem . Find E(3X+4Y-5Z) 

Posted Date: 5/9/2013 4:08:00 AM | Location : United States







Related Discussions:- Compute the standard deviation, Assignment Help, Ask Question on Compute the standard deviation, Get Answer, Expert's Help, Compute the standard deviation Discussions

Write discussion on Compute the standard deviation
Your posts are moderated
Related Questions
Make a decision about the given claim. Use only the rare event rule, and make subjective estimates to determine whether events are likely. For example, if the claim is that a coi

Estimate a linear probability model: Consider the multiple regression model: y = β 0 +β 1 x 1 +.....+β k x k +u Suppose that assumptions MLR.1-MLR4 hold, but not assump

find the expected value of the mean square error and of the mean square reggression

(a) Average rainfall during the month of January is found to be 58 mm. A Class A pan evaporation recorded an average of 8.12 mm/day near an irrigation reservoir. The average

how many types of ogive are there

Using a random sample of 670 individuals for the population of people in the workforce in 1976, we want to estimate the impact of education on wages. Let wage denote hourly wage in

A marketing research firm was engaged by an automobile manufacturer to conduct a pilot study to examine the feasibility of using logistic regression for ascertaining the likelihood

Problem 1 Do male and female students differ significantly in regard to their average math achievement scores, grades in high school, and visualization test scores? Can you con

Suppose that in the actual survey of 50 prospective customers, 6 subscribe to the 3 for all offer, what does this tell you about the previous estimate of the proportion of customer

find the average rate of increase in population which in the first decade has increased 20%.in the second 25% and in the third 44%