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 69 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
Excellent

kswal303

  • Member
  • Posts: 316
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

Persons who overdose with cardiac glycosides have a better chance of overall survival if they can survive the first 24 hours after the overdose.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

Long-tailed Widowbird Long-tailed Widowbird
The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha The recent mass upheavals in Tunisia, Egypt, Libya, Yemen, and Syria gave political scientists a cha
How to solve any percent change problem How to solve any percent change problem
Denney's model ON actual level of performance on exercised and unexercised abilities Denney's model ON actual level of performance on exercised and unexercised abilities
Calico cat illustrates the Lyon hypothesis Calico cat illustrates the Lyon hypothesis
Video: X chromosome inactivation in calico cats

For a complete list of videos, visit our video library