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

Author Question: A history instructor has given the same pretest and the same final examination each semester. He is ... (Read 20 times)

SAVANNAHHOOPER23

  • Hero Member
  • *****
  • Posts: 542
on: Jul 24, 2018
A history instructor has given the same pretest and the same final examination each semester. He is interested in determining if there is a relationship between the scores of the two tests.
 
  He computes the linear correlation coefficient and notes that it is 1.15. What does this correlation coefficient value tell the instructor? A) The history instructor has made a computational error.
  B) There is a strong positive correlation between the tests.
  C) There is a strong negative correlation between the tests.
  D) The correlation is something other than linear.

Question 2

Suppose you want to test the claim that  = 3.5. Given a sample size of n = 48 and a level of significance of  = 0.01, when should you reject H0 ?
 
  A) Reject H0 if the standardized test statistic is greater than 2.575 or less than -2.575.
  B) Reject H0 if the standardized test statistic is greater than 2.33 or less than -2.33.
  C) Reject H0 if the standardized test statistic is greater than 1.96 or less than -1.96
  D) Reject H0 if the standardized test statistic is greater than 1.645 or less than -1.645


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fdliggud

  • Sr. Member
  • ****
  • Posts: 366
Reply #1 on: Jul 24, 2018
Answer to Question 1

A

Answer to Question 2

A


SAVANNAHHOOPER23

  • Member
  • Posts: 542
Reply 2 on: Jul 24, 2018
Thanks for the timely response, appreciate it

kalskdjl1212

  • Member
  • Posts: 353
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Examining Retinal Structures, Fundoscopic Examination Examining Retinal Structures, Fundoscopic Examination
Nurising history for heart assessment Nurising history for heart assessment
A physician uses a portable electronic tablet to enter patient data while in the examination room. A physician uses a portable electronic tablet to enter patient data while in the examination room.
The Martial History of U.S. Brides and Grooms The Martial History of U.S. Brides and Grooms
Record the first puff and this final reading for each cylinder. The final readings should all be ... Record the first puff and this final reading for each cylinder. The final readings should all be ...
Out of Many: A History of the American People Out of Many: A History of the American People
Video: Vasectomy

For a complete list of videos, visit our video library