« previous next »

Author Question: The formula for a confidence interval for the population mean is based on the rule for sample means, ... (Read 51 times)

melly21297

  • Hero Member
  • *****
  • Posts: 565
on: Jul 24, 2018
The formula for a confidence interval for the population mean is based on the rule for sample means, which has assumptions that need to be met. What are those assumptions? (Hint: there are different assumptions depending on whether or not the population is bell-shaped.)

Question 2

What three items are needed in order to construct a confidence interval to estimate the mean of a population?


nothere

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jul 24, 2018
Answer to Question 1

1) IF THE POPULATION IS BELL-SHAPED, ANY SIZE RANDOM SAMPLE CAN BE TAKEN; 2) IF THE POPULATION IS NOT BELL-SHAPED, A LARGE ENOUGH SAMPLE MUST BE TAKEN (AT LEAST 30 MEASUREMENTS).

Answer to Question 2

1) SAMPLE MEAN; 2) SAMPLE STANDARD DEVIATION; 3) SAMPLE SIZE.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Rule of Nines. A method for determining percentage of body burned. Each different colored section re Rule of Nines. A method for determining percentage of body burned. Each different colored section re
How long does it take for 90% of a sample of strontium-90 (half-life of 28.8 years) to decay? How long does it take for 90% of a sample of strontium-90 (half-life of 28.8 years) to decay?
Average Annual Growth Rates of Population by Country Group Average Annual Growth Rates of Population by Country Group
Slope Formula Slope Formula
A 230.0-mL sample of a 0.275 M solution is left on a hot plate overnight; the following morning ... A 230.0-mL sample of a 0.275 M solution is left on a hot plate overnight; the following morning ...
Quadratic Formula Quadratic Formula
Video: Neuron structure and function - sensory neurons, association neurons & motor neurons

For a complete list of videos, visit our video library