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

Author Question: A 95 confidence interval means that 95 of all possible random samples will result in an interval ... (Read 116 times)

rmenurse

  • Hero Member
  • *****
  • Posts: 513
on: Jul 24, 2018
A 95 confidence interval means that 95 of all possible random samples will result in an interval that contains the true population value, and 5 of them won't. How could a confidence interval that is based on a random sample not contain the true population value?

Question 2

Statisticians have a phrase, Being a statistician means never having to say you're certain.. Do you know whether the confidence interval constructed by your sample actually contains the true population value? Why or why not?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

djpooyouma

  • Sr. Member
  • ****
  • Posts: 325
Reply #1 on: Jul 24, 2018
Answer to Question 1

5 OF THE SAMPLE RESULTS WILL BE UNUSUALLY HIGH OR UNUSUALLY LOW COMPARED TO THE TRUE POPULATION VALUE, JUST BY CHANCE.

Answer to Question 2

NO, BECAUSE SAMPLE RESULTS VARY. 95 OF THE SAMPLES WILL RESULT IN CONFIDENCE INTERVALS THAT ARE CORRECT, AND 5 WON'T. YOU NEVER KNOW WHETHER A PARTICULAR CONFIDENCE INTERVAL IS CORRECT UNLESS THE TRUTH IS REVEALED AT SOME FUTURE DATE.


rmenurse

  • Member
  • Posts: 513
Reply 2 on: Jul 24, 2018
Great answer, keep it coming :)

Zebsrer

  • Member
  • Posts: 284
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

Variation in climatic conditions result in geographic variation in the distribution of biome types a Variation in climatic conditions result in geographic variation in the distribution of biome types a
Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do
Colles’ A break in the distal portion of the radius; often the result of reaching out to cushion a f Colles’ A break in the distal portion of the radius; often the result of reaching out to cushion a f
Assume z is a standard normal random variable. What is the value of z if the area to the right ... Assume z is a standard normal random variable. What is the value of z if the area to the right ...
Discrete random variables- Probability Distribution Function Discrete random variables- Probability Distribution Function
Production of prototrophs as a result of genetic recombination Production of prototrophs as a result of genetic recombination
Video: Polysaccharides

For a complete list of videos, visit our video library