« previous next »

Author Question: Which of the following tactics will reduce the power of a planned study using a t test for ... (Read 65 times)

mpobi80

  • Hero Member
  • *****
  • Posts: 519
on: Jun 20, 2018
Which of the following tactics will reduce the power of a planned study using a t test for independent means?
 
  A) using a less stringent significance level (such as .10 instead of .05 )
  B) using more precise measures
  C) increasing the size of your samples
  D) using unequal sample sizes instead of equal ones (for the same number of participants)

Question 2

The results of a t test for independent means can be misleading when the sample variances are
 
  A) not at all different (e.g., a 1 : 1 ratio).
  B) a little different (e.g., a 1.5 : 1 ratio).
  C) moderately different (e.g., a 2 : 1 ratio).
  D) very different (e.g., a 4:1 ratio).


FergA

  • Sr. Member
  • ****
  • Posts: 352
Reply #1 on: Jun 20, 2018
Answer to Question 1

D

Answer to Question 2

I appreciate you answering this question. Great community


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

mpobi80

  • Hero Member
  • *****
  • Posts: 519
Reply #2 on: Jun 20, 2018
Thank you


FergA

  • Sr. Member
  • ****
  • Posts: 352
Reply #3 on: Jun 20, 2018
No problem :)


« previous next »
 

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Iliopsoas Muscle Test Iliopsoas Muscle Test
Pulmonary function test: spirometry. (a) Normal respiratory volumes, as measured during spirometry. Pulmonary function test: spirometry. (a) Normal respiratory volumes, as measured during spirometry.
The Chernobyl, Ukraine, Nuclear Power Plant Disaster The Chernobyl, Ukraine, Nuclear Power Plant Disaster
Results from sequential study of two cohorts tested at three ages and at three different points in t Results from sequential study of two cohorts tested at three ages and at three different points in t
Rinne test. Bone conduction Rinne test. Bone conduction
The Prison Study The Prison Study
Video: Acids and bases - definition

For a complete list of videos, visit our video library