This topic contains a solution. Click here to go to the answer

Author Question: The z test for independent groups is seldom used because _________. a. it lacks sensitivity b. ... (Read 47 times)

Redwolflake15

  • Hero Member
  • *****
  • Posts: 569
The z test for independent groups is seldom used because _________.
 
  a. it lacks sensitivity
  b. it is too complicated
  c. we seldom know the population variances
  d. the sampling distribution of z under H0 is unknown

Question 2

Having just made what you feel is to be a Type II error, using an independent groups design and a t test analysis, which of the following might you do in the next experiment to reduce the probability of a Type II error?
 
  a. increase N
  b. change to a correlated groups design
  c. try to reduce the variance by better experimental control
  d. all of these



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

heinisk01

  • Sr. Member
  • ****
  • Posts: 329
Answer to Question 1

C

Answer to Question 2

D




Redwolflake15

  • Member
  • Posts: 569
Reply 2 on: Jun 19, 2018
:D TYSM


deja

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Excellent

 

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?

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?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

For a complete list of videos, visit our video library