This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A researcher wants a 90 percent chance of rejecting the null hypothesis at the one-tailed .05 level ... (Read 39 times)

dakota nelson

  • Hero Member
  • *****
  • Posts: 604
on: Jun 20, 2018
A researcher wants a 90 percent chance of rejecting the null hypothesis at the one-tailed .05 level with an effect size of .15 . The sample size needed is about
 
  a. 140.
  b. 160.
  c. 180.
  d. 200.
  e. 380

Question 2

The greatest statistical power occurs when
 
  a. the sample is small and heterogeneity is small.
  b. the sample is small and heterogeneity is large.
  c. the sample is large and heterogeneity is small.
  d. the sample is large and heterogeneity is large.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

chem1s3

  • Sr. Member
  • ****
  • Posts: 320
Reply #1 on: Jun 20, 2018
Answer to Question 1

E

Answer to Question 2

C


dakota nelson

  • Member
  • Posts: 604
Reply 2 on: Jun 20, 2018
Gracias!

LegendaryAnswers

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

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?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Mechanisms of pain at the nociceptor level Mechanisms of pain at the nociceptor level
Prehensile-Tailed Porcupine Prehensile-Tailed Porcupine
Transmission of autosomal dominant disorders (50% chance for an affected child). Transmission of autosomal dominant disorders (50% chance for an affected child).
Upper-Level Maps Upper-Level Maps
Examples of Basic-Level, Subordinate, and Superordinate Concepts Examples of Basic-Level, Subordinate, and Superordinate Concepts
Video: The Pressure Flow Model in a Plant

For a complete list of videos, visit our video library