« previous next »

Author Question: In testing for the differences between the means of two independent populations where the variances ... (Read 91 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?

The longest a person has survived after a heart transplant is 24 years.

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

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.

Age Differences in Attention to a Puppet Show Video Age Differences in Attention to a Puppet Show Video
How temperature differences generate wind How temperature differences generate wind
How to find the first and second differences for any table of values How to find the first and second differences for any table of values
Testing distant vision Testing distant vision
Sensory Differences Between Species Sensory Differences Between Species
Light-independent reactions of photosynthesis Light-independent reactions of photosynthesis
Video: Origin of organelles Animation

For a complete list of videos, visit our video library