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

Author Question: If five random samples are selected from a normal distribution, what will be the distribution of ... (Read 280 times)

jazziefee

  • Hero Member
  • *****
  • Posts: 505
on: Jun 24, 2018

  If five random samples are selected from a normal distribution, what will be the distribution of the means of these five samples?
 

  a.The distribution of the means will be normal.
  b.The distribution will depend on the standard error of the means.
  c.The distribution is unknown and will only be normal if the number of samples is much larger than five according to the Central Limit Theorem.
  d.The distribution of the means will not be normal since the sample size of five is very small.

Question 2


  The daily sales at a restaurant have an approximately normal distribution with a mean of 700 and a standard deviation of 120. A random sample of 10 days is taken and the mean is calculated. What is the probability that this mean will exceed 800?
 

  a.
  b.
  c.
  d.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Jody Vaughn

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jun 24, 2018
Answer to Question 1

correct: a

Answer to Question 2

correct: a


jazziefee

  • Member
  • Posts: 505
Reply 2 on: Jun 24, 2018
:D TYSM

jomama

  • Member
  • Posts: 346
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Changes in metabolic rate of selected structures in a mammal's body during different activities Changes in metabolic rate of selected structures in a mammal's body during different activities
Changes in the bronchioles during an asthma attack: (a) Normal bronchiole. (b) The inflammatory ... Changes in the bronchioles during an asthma attack: (a) Normal bronchiole. (b) The inflammatory ...
Selected Immunosuppressants Selected Immunosuppressants
A) Normal bronchiole and (B) bronchiole constricted in asthma attack. A) Normal bronchiole and (B) bronchiole constricted in asthma attack.
Distribution of Modern Day Oceanic Plateaus and Fragments Distribution of Modern Day Oceanic Plateaus and Fragments
Samples of the DNA separated by gel electrophoresis Samples of the DNA separated by gel electrophoresis
Video: Audiology

For a complete list of videos, visit our video library