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 138 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?

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?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

School-age children are often independent and industrious, with a developing sense of self-confidenc School-age children are often independent and industrious, with a developing sense of self-confidenc
Performing Venipuncture Using the Vacutainer Method Performing Venipuncture Using the Vacutainer Method
Performing Venipuncture Using the Vacutainer Method Performing Venipuncture Using the Vacutainer Method
A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ... A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ...
How to evaluate third-order determinants by Minors Method (Question 1) How to evaluate third-order determinants by Minors Method (Question 1)
Hermann Muller and the Drosophila ClB Chromosome Method Hermann Muller and the Drosophila ClB Chromosome Method
Video: Kidney Stones

For a complete list of videos, visit our video library