Suppose that x and y are random variables such that ex 4

Assignment Help Econometrics
Reference no: EM13375854

Suppose that X and Y are random variables such that E(X) = 4, E(Y) = 2 and var(X) = var(Y) = 4. Let Z=X+Y. 1. Find E(Z) (1 dp) 2. Assuming that X and Y are statistically independent find var(Z) (1 dp) 3. Assuming that cov(X,Y) = 2 find var(Z) (1dp)

Reference no: EM13375854

Questions Cloud

Modelling stock returns in an oecd country the objective of : modelling stock returns in an oecd country the objective of this assignment is to estimate some alternative models of
For the following problems assume that under free trade ie : for the following problems assume that under free trade i.e. before any tariffs are imposedthe u.s. has a domestic shoe
Now assume that the us is a large country in this market : now assume that the u.s. is a large country in this market with the same supply and demand equations given in part ii
Small country tariffin the us supply and demand for a : small country tariffin the u.s. supply and demand for a particular good are given by the equationsqs 10pqd 105 -
Suppose that x and y are random variables such that ex 4 : suppose that x and y are random variables such that ex 4 ey 2 and varx vary 4. let zxy. 1. find ez 1 dp 2. assuming
Students are to choose a low income economy lic as : students are to choose a low income economy lic as classified by the world bank and write a brief report on the level
Country investment final casenbspthe woman in the dark suit : country investment final casenbspthe woman in the dark suit serious women always wear black suits leafed through the
1find a recent january 2012-march 2012 money and banking : 1.find a recent january 2012-march 2012 money and banking related article in the media the economist globe and mail
What average annual inflation rate would a monetarist : what average annual inflation rate would a monetarist expect if the fed maintained a growth rate of m2 10 per year for

Reviews

Write a Review

Econometrics Questions & Answers

  What is the consumer surplus enjoyed by the high demand

design two packages for the second-degree price discrimination case so that the first package has quantity 8 for the high demand and the second one has quantity 6 for the lower demand such that the low demand group has consumer surplus at least $5..

  Calculate the labor-force participation rate

Suppose that the country of Bigu has a population of 127 million, of which 83 million are in the working-age population. Of those, 25 million are not in the labor force and 52 million are employed. a Calculate the working-age population as a percen..

  Would max be as well off as he was before the tax

A tax is placed on x so that x now costs Max $2 while his income and the price of y stay the same. How much of good x does he now demand? Would Max be as well off as he was before the tax if when the tax was imposed, his income rose by an amount eq..

  How much will your annual withdrawal be

put $20,000 on deposit on your 13th birthday at 5 percent compounded annually. On your 14th birthday, the account begins earning 6 percent. Then on your 15th birthday, it begins earning 7 percent. You plan to withdrawal equal amounts on your sixty-..

  Was the higher price caused by a change in demand

In the last month, the price of gasoline increased by 20%. Your job is to determine what caused the increase in price: a change in demand or change in supply. Ms. Info has all the numbers associated with the gasoline market and she can answer a si..

  What is the value of the marginal product of the last worker

Your enterprising uncle opens a sandwich shop that employs 7 people. The employees are paid $6 per hour, and a sandwich sell for $3. If your uncle is maximizing his profit, what is the value of the marginal product of the last worker he hired

  What is the best choice of hours for the worker

The benefit function is given by B(H) = 500H - 22.5H2 and the cost function is given by C(H) = 100 + 15H2. The corresponding marginal benefit and marginal cost functions are given by MB(H) =500 - 45H and MC(H) = 100 + 30H.

  What is the expected value of each ticket

If the PowerBall lottery has $100 million prize, and tickets cost $1.00 each, and there are 500 million tickets sold, what is the expected value of each ticket Is it rational to purchase a ticket What if you know that only 50 million tickets have ..

  Linear relationship between explanatory variables

Rewrite the model to show that this is in fact a two-variable model rather than a three-variable model. Define the parameters

  What are initial levels of real gdp and labor productivity

In the economy of Cape Despair, the subsistence real wage rate is $15 an hour. Whenever real GDP per hour rises above $15, the population grows, and whenever real GDP per hour of labor falls below this level, the population falls.

  How an individual will gain by choosing air travel

An airline ticket from Baltimore to Miami costs $525. A bus ticket is $325. Traveling by plane will take 5 hours, compared with 25 hours by bus. Thus, the plane costs $200 more but saves 20 hours of time

  Estimate the population mean number of rental days

A large equipment rental company wants to estimate the mean number of days a piece of equipment is rented out. A random sample of 14 recent rentals shows a mean of 2.14 days and a standard deviation of 1.29 days.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd