« previous next »

Author Question: Under what circumstances should the standard normal distribution be used when employing the ... (Read 18 times)

frankwu

  • Hero Member
  • *****
  • Posts: 549
on: Jun 24, 2018
Under what circumstances should the standard normal distribution be used when employing the Mann-Whitney U test?
 
  A) When the sample sizes are equal from the two populations
  B) When the sample sizes are greater than 20
  C) When the populations are normally distributed
  D) You would never use the standard normal distribution.

Question 2

Consider the situation in which a study was recently conducted to determine whether the median price of houses is the same in Seattle and Phoenix. The following data were collected.
 
  Seattle Phoenix
  233,000 309,000
  567,800 422,000
  145,600 209,000
  234,000 187,000
  356,000 165,000
  203,000 189,000
 
  Given these data, if a Mann-Whitney U test is to be used, the sum of the ranks for Seattle is:
  A) 43
  B) 35
  C) 25.5
  D) 40


jordangronback

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Jun 24, 2018
Answer to Question 1

B

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Normal and enlarged tonsils. Normal and enlarged tonsils.
Generalized scheme showing the contribution of absorption, distribution, metabolism, elimination, ... Generalized scheme showing the contribution of absorption, distribution, metabolism, elimination, ...
How to quickly determine the maximum or minimum value of a quadratic equation in standard form How to quickly determine the maximum or minimum value of a quadratic equation in standard form
Distribution of zebra and quagga mussels in North America in 2014 Distribution of zebra and quagga mussels in North America in 2014
A deficiency of linoleic acid can interfere with normal growth and result in inflammation A deficiency of linoleic acid can interfere with normal growth and result in inflammation
The karyotype of an XYY male. Affected individuals are usually taller than normal, and some, but not The karyotype of an XYY male. Affected individuals are usually taller than normal, and some, but not
Video: Acid-base imbalances - compensation of respiratory acidosis and alkalosis

For a complete list of videos, visit our video library