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

Author Question: The dean of admissions in a large university has determined that the scores of the freshman class in ... (Read 133 times)

sam.t96

  • Hero Member
  • *****
  • Posts: 570
on: Jul 24, 2018
The dean of admissions in a large university has determined that the scores of the freshman class in a mathematics test are normally distributed with a mean of 82 and a standard deviation of 8 . Based on this information, what is the probability that the mean score of a sample of 64 students is at least 80?
 a. .0987
  b. .4772
  c. .5987
  d. .7885
  e. .9772

Question 2

The number of degrees of freedom associated with the t-test, when the data are gathered from a matched pairs experiment with 10 pairs, is:
 a. 10
  b. 20
  c. 9
  d. 18
  e. 11


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jessofishing

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 24, 2018
Answer to Question 1

E

Answer to Question 2

C


sam.t96

  • Member
  • Posts: 570
Reply 2 on: Jul 24, 2018
Great answer, keep it coming :)

kswal303

  • Member
  • Posts: 316
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Did you know?

Cyanide works by making the human body unable to use oxygen.

Large-scale impacts of the (a) positive, and (b) negative phases of the North Atlantic Oscillation. Large-scale impacts of the (a) positive, and (b) negative phases of the North Atlantic Oscillation.
Large intestine Large intestine
Results from sequential study of two cohorts tested at three ages and at three different points in t Results from sequential study of two cohorts tested at three ages and at three different points in t
Major Findings of the High Scope Preschool Study High Scope participants showed better academic per Major Findings of the High Scope Preschool Study High Scope participants showed better academic per
Social class and social status Social class and social status
Immunoglobulin Class (3–11) Immunoglobulin Class (3–11)
Video: Hip Animation

For a complete list of videos, visit our video library