« previous next »

Author Question: SAT scores have an average of 1200 with a standard deviation of 60 . A sample of 36 scores is ... (Read 159 times)

DyllonKazuo

  • Hero Member
  • *****
  • Posts: 565
on: Jun 24, 2018
SAT scores have an average of 1200 with a standard deviation of 60 . A sample of 36 scores is selected.
 a. What is the probability that the sample mean will be larger than 1224?
  b. What is the probability that the sample mean will be less than 1230?
  c. What is the probability that the sample mean will be between 1200 and 1214?
  d. What is the probability that the sample mean will be greater than 1200?
  e. What is the probability that the sample mean will be larger than 73.46?

Question 2

In a standard normal distribution, the range of values of z is from _____.
 a. minus infinity to infinity
  b. 1 to 1
  c. 0 to 1
  d. 3.09 to 3.09


kxciann

  • Sr. Member
  • ****
  • Posts: 356
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. .0082
b. .9986
c. .4192
d. .5
e. 1.0

Answer to Question 2

a


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

DyllonKazuo

  • Hero Member
  • *****
  • Posts: 565
Reply #2 on: Jun 24, 2018
Thank you :)


kxciann

  • Sr. Member
  • ****
  • Posts: 356
Reply #3 on: Jun 24, 2018
Happy to help you


« previous next »
 

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

The standard protocol of a metagenomics experiment. The standard protocol of a metagenomics experiment.
Sample hypoglycemic protocol. Sample hypoglycemic protocol.
Sample Program for Changing Daily Caloric Intake (cont.) Sample Program for Changing Daily Caloric Intake (cont.)
Sample budget spreadsheet form for first year of business. Sample budget spreadsheet form for first year of business.
Expected Distribution of IQ Scores Expected Distribution of IQ Scores
As a result of a hole in the graph, which of the following functions does not have an average ... As a result of a hole in the graph, which of the following functions does not have an average ...
Video: Summary of female reproductive cycle days 1-28

For a complete list of videos, visit our video library