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

Author Question: When variables A and B are independent, the variance of A - B is equal to a. the variance of A ... (Read 84 times)

EAugust

  • Hero Member
  • *****
  • Posts: 550
on: Jun 20, 2018
When variables A and B are independent, the variance of A - B is equal to
 
  a. the variance of A plus the variance of B.
  b. the variance of A.
  c. variance of A minus the variance of B.
  d. it cannot be determined from the information given here.

Question 2

The variance sum law deals with
 
  a. the variance of the sum of two or more variables.
  b. the variance of the difference of two or more variables.
  c. the variance of any single variable.
  d. both a) and b).


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Shshxj

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Jun 20, 2018
Answer to Question 1

A

Answer to Question 2

D


EAugust

  • Hero Member
  • *****
  • Posts: 550
Reply #2 on: Jun 20, 2018
Thank you!


Shshxj

  • Sr. Member
  • ****
  • Posts: 335
Reply #3 on: Jun 20, 2018
Happy to help


« previous next »
 

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Rule of Nines. A method for determining percentage of body burned. Each different colored section re Rule of Nines. A method for determining percentage of body burned. Each different colored section re
Discrete random variables- Probability Distribution Function Discrete random variables- Probability Distribution Function
The xy plane is painted with a uniform surface charge density which is equal to 40 nC/m2 . ... The xy plane is painted with a uniform surface charge density which is equal to 40 nC/m2 . ...
Planet Z-34 has a mass equal to 1/3 that of Earth, a radius equal to 1/3 that of Earth, and an ... Planet Z-34 has a mass equal to 1/3 that of Earth, a radius equal to 1/3 that of Earth, and an ...
Mendel’s test cross to verify independent assortment Mendel’s test cross to verify independent assortment
Light-independent reactions in C4 plants Light-independent reactions in C4 plants
Video: Arthroscopy

For a complete list of videos, visit our video library