« previous next »

Author Question: You plan to conduct a study where your nondirectional hypothesis will be assessed with a t test for ... (Read 39 times)

cnetterville

  • Hero Member
  • *****
  • Posts: 547
on: Jun 20, 2018
You plan to conduct a study where your nondirectional hypothesis will be assessed with a t test for independent means at the .05 significance level.
 
  If you are predicting a large effect size, how many participants would you need in total (assuming equal Ns per group) to obtain 80 power?
  A) 20
  B) 26
  C) 40
  D) 52

Question 2

You plan to conduct a study where your directional hypothesis will be assessed with a t test for independent means at the .05 significance level.
 
  Assuming that you will recruit 50 participants per group and predict a small effect size, how much power will your study have?
  A) .17
  B) .26
  C) .29
  D) .41


sokh

  • Sr. Member
  • ****
  • Posts: 357
Reply #1 on: Jun 20, 2018
Answer to Question 1

D

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

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.

Generalized body plan of a bony fish Generalized body plan of a bony fish
An example of color blindness test. A person with red-green color blindness would not be able to dis An example of color blindness test. A person with red-green color blindness would not be able to dis
Simmon's Citrate Test Simmon's Citrate Test
Testing a Simple Hypothesis Testing a Simple Hypothesis
Performing a PKU Test Performing a PKU Test
Student Test Scores versus GDP per Capita Student Test Scores versus GDP per Capita
Video: Structure of a Ribosome

For a complete list of videos, visit our video library