If X is a random variable, prove that Cov(X, X) = 2 X .
Question:
If X is a random variable, prove that Cov(X, X) = σ2X.
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 63% (11 reviews)
CovX X ...View the full answer
Answered By
Shristi Singh
A freshman year metallurgy and material science student in India.
4.80+
2+ Reviews
10+ Question Solved
Related Book For
Question Posted:
Students also viewed these Mathematics questions
-
If X is a random variable having a geometric distribution, show that P(X = x + n| X > n) = P(X = x)
-
If X is a random variable having a normal distribution with the mean and the standard deviation s, use the third part of Theorem 4.10 on page 128 and Theorem 6.6 to show that the moment generating...
-
If X is a random variable having the standard normal distribution and Y = X2, show that cov(X, Y) = 0 even though X and Y are evidently not independent.
-
Your input file contains sentences. A sentence contains words seperated with one space or more spaces. And a sentence ends with a "." Symbol. Write appropriate lex code to create desired outputs....
-
How does the difference in energy between energy levels relate to the energy of the photon that is emitted by a transition between those levels?
-
Harris Inc. had the following transactions: 1. On May 1, Harris purchased parts from a Japanese company for a U.S. dollar equivalent value of $8,400 to be paid on June 20. The exchange rates were May...
-
What is the primary focus of an auditor's tests of controls over purchasing?
-
At the beginning of 2012, D & L Enterprises had the following balances in its accounts: Cash $8,400 Inventory 2,000 Common stock 8,000 Retained earnings 2,400 During 2012, D & L Enterprises...
-
You are looking at an investment opportunity that requires an initial investment of $7 million and pays $1.2 million the first year with cash flows increasing 3% per year after that. What is your...
-
Palmer Industries prepares annual financial statements and adjusts its accounts only at the end of the year. The following information is available for the year ended December 31, 2017: a. Palmer...
-
A lot of 1000 components contains 300 that are defective. Two components are drawn at random and tested. Let A be the event that the first component drawn is defective, and let B be the event that...
-
The number of customers in line at a supermarket express checkout counter is a random variable whose probability mass function is given in the following table. For each customer, the number of items...
-
a What is the capital budgeting decision? b What do you call the specific mixture of long-term debt and equity that a firm chooses to use? c Into what category of financial management does cash...
-
Write down 5 equations, 5 endogenous variables, and exogenous variables/parameters of the Solow model. What is the equation we use to draw the Solow-diagram? Show the steps and explain how you drive...
-
Suppose in the far-field for a particular antenna at the origin, the electric field is Es = nolo e-jr a. Make a draw of the electric field in Cartezian coordinate system -sin ea.
-
Rate IFE and EFE Matrix for below case study A. B. Case Abstract Headquartered in Dubai in the United Arab Emirates, the Emirates Group is the parent of Emirates, the largest airline in the Middle...
-
Digna Dy Masapawan, a Certified Management Accountant started her own business on December 1, 2023 after acquiring the necessary expertise from different international entities in the field of...
-
2. Convert the following to POSTfix notations [10 points] i. ((x + y) / (z + v) * u)/(t+w) ii. (((x * y)^2)/(z+ (v - t)))/(w-s) Convert the following to INfix notation and provide the resultant value...
-
Both DNS servers and DHCP servers send your client PC an IP address. What is different about these two addresses?
-
A bar of length = 1 has one fixed and one free end and stiffness function c(x) = 1 - x. Find the displacement when subjected to a unit force. Pay careful attention to the boundary condition at the...
-
The article "Effects of Waste Glass Additions on the Properties and Durability of Fired Clay Brick" (S. Chidiac and L. Federico, Can J Civ Eng, 2007: 1458-1466) reports that the average initial rate...
-
In an experiment involving the breaking strength of a certain type of thread used in personal flotation devices, one batch of thread was subjected to a heat treatment for 60 seconds and another batch...
-
The article "Differences in Susceptibilities of Different Cell Lines to Bilirubin Damage" (K. Ngai, C. Yeung, and C. Leung, Journal of Paediatric Child Health, 2000:36-45) reports an investigation...
-
Managers use CVP concepts to perform sensitivity analysis. Sensitivity analysis is a "what-if" technique that asks what will happen to a company's breakeven or target profit if sales price, costs, or...
-
John Fleming, chief administrator for Valley View Hospital, is concerned about the costs for tests in the hospital s lab. Charges for lab tests are consistently higher at Valley View than at other...
-
A company is looking at new equipment with an installed cost of $436,859. This cost will be depreciated straight-line to zero over the project's 6-year life, at the end of which the equipment can be...
Study smarter with the SolutionInn App