This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: If X and Y are independent random variables, which of the following identities is false? a. COV(X, ... (Read 37 times)

mcmcdaniel

  • Hero Member
  • *****
  • Posts: 550
on: Jun 24, 2018
If X and Y are independent random variables, which of the following identities is false?
 a. COV(X, Y) = 1
  b. E(X + Y) = E(X) + E(Y)
  c. V(X + Y) = V(X) + V(Y)
  d. All of these choices are true.

Question 2

If X and Y are any random variables with E(X) = 5, E(Y) = 6, E(XY) = 21, V(X) = 9 and V(Y) = 10, then the relationship between X and Y is a:
 a. strong positive relationship
  b. strong negative relationship
  c. weak positive relationship
  d. weak negative relationship


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

joneynes

  • Sr. Member
  • ****
  • Posts: 376
Reply #1 on: Jun 24, 2018
Answer to Question 1

A

Answer to Question 2

B


mcmcdaniel

  • Member
  • Posts: 550
Reply 2 on: Jun 24, 2018
:D TYSM

tuate

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Independent Assortment p2 Independent Assortment p2
Scattergrams are a mechanism used by political scientists to show patterns and relationships among v Scattergrams are a mechanism used by political scientists to show patterns and relationships among v
Early in the twentieth century, when malnutrition was common, companies such as this one advertised Early in the twentieth century, when malnutrition was common, companies such as this one advertised
Anterosuperior view of false pelvis (pink) Anterosuperior view of false pelvis (pink)
Trihybrid cross to verify independent assortment Trihybrid cross to verify independent assortment
Animated Light-independent reactions in CAM plants. Animated Light-independent reactions in CAM plants.
Video: Brain Anatomy Animation (Part 1 of 2)

For a complete list of videos, visit our video library