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

Author Question: When estimating a confidence interval for the difference between 2 means using the method where ... (Read 159 times)

rl

  • Hero Member
  • *****
  • Posts: 579
on: Jun 24, 2018
When estimating a confidence interval for the difference between 2 means using the method where sample variances are pooled, which of the following assumptions is not needed?
 
  A) The populations are normally distributed.
  B) The populations have equal variances.
  C) The samples are independent.
  D) The sample sizes are equal.

Question 2

In estimating a population proportion, the factors that are needed to determine the required sample size are the confidence level, the margin of error and some idea of what the population proportion is.
 
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cloudre37

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jun 24, 2018
Answer to Question 1

D

Answer to Question 2

TRUE


rl

  • Hero Member
  • *****
  • Posts: 579
Reply #2 on: Jun 24, 2018
Correct answers!


cloudre37

  • Sr. Member
  • ****
  • Posts: 332
Reply #3 on: Jun 24, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

The effects of organophosphate poisoning are referred to by using the abbreviations “SLUD” or “SLUDGE,” It stands for: salivation, lacrimation, urination, defecation, GI upset, and emesis.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

The twin method can be used to investigate genetic and environmental influences on the development o The twin method can be used to investigate genetic and environmental influences on the development o
The difference between a human and an ape. The difference between a human and an ape.
Neural tissue that has been stained by the Golgi method. Because only a few neurons take up the ... Neural tissue that has been stained by the Golgi method. Because only a few neurons take up the ...
Resting Membrane Potential: Voltage Difference Resting Membrane Potential: Voltage Difference
An electron is accelerated from rest through a potential difference of 3750 V. It enters a ... An electron is accelerated from rest through a potential difference of 3750 V. It enters a ...
An electron is accelerated from rest through a potential difference. After acceleration the ... An electron is accelerated from rest through a potential difference. After acceleration the ...
Video: Introduction to Herpes

For a complete list of videos, visit our video library