« previous next »

Author Question: If the covariance of two random variables X and Y is positive, then Var(X - Y) will be larger than ... (Read 51 times)

bobbie

  • Hero Member
  • *****
  • Posts: 592
on: Jun 24, 2018
If the covariance of two random variables X and Y is positive, then Var(X - Y) will be larger than Var(X + Y).
 
  Indicate whether the statement is true or false

Question 2

Which of the following will never be a required condition of a nonparametric test?
 
  A) Data used for the test are ordinal data.
  B) Data used for the test are interval data.
  C) The samples are drawn from normally distributed populations.
  D) The populations being compared are identical in spread and shape.


Ksh22

  • Sr. Member
  • ****
  • Posts: 297
Reply #1 on: Jun 24, 2018
Answer to Question 1

FALSE

Answer to Question 2

C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Positive and negative selection during T-cell development. Positive and negative selection during T-cell development.
The Mantoux tuberculin skin test. Positive reaction. The Mantoux tuberculin skin test. Positive reaction.
The peptidoglycan layer of Gram-positive bacteria The peptidoglycan layer of Gram-positive bacteria
The “inside positive” rule The “inside positive” rule
The apples of today are larger and sweeter than their ancestors, thanks to hundreds of years The apples of today are larger and sweeter than their ancestors, thanks to hundreds of years
Positive and Negative Reinforcement Positive and Negative Reinforcement
Video: Leukemia

For a complete list of videos, visit our video library