« previous next »

Author Question: In testing for the differences between the means of two independent populations where the variances ... (Read 84 times)

tatyanajohnson

  • Hero Member
  • *****
  • Posts: 569
on: Jun 24, 2018
In testing for the differences between the means of two independent populations where the variances in each population are unknown but assumed equal, the degrees of freedom is:
 a. n1 + n2 c. n1 + n2 - 1
  b. n1 + n2 - 2 d. None of these choices

Question 2

The time series component that reflects a wavelike pattern describing a long-term trend that is generally apparent over a number of years is called cyclical.
  Indicate whether the statement is true or false


katheyjon

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jun 24, 2018
Answer to Question 1

B

Answer to Question 2

T


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

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).

Independent Assortment Independent Assortment
Species, subspecies, populations, and individuals. Species are reproductively isolated from one anot Species, subspecies, populations, and individuals. Species are reproductively isolated from one anot
Independent and Dependent Variables Independent and Dependent Variables
Testing for the bulge sign Testing for the bulge sign
E chart for testing distant vision E chart for testing distant vision
Sensory Differences Between Species Sensory Differences Between Species
Video: Structure of a Ribosome

For a complete list of videos, visit our video library