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 55 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
Great answer, keep it coming :)

sultansheikh

  • Member
  • Posts: 335
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.

Did you know?

The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.

Physical examination of the thyroid gland. Physical examination of the thyroid gland.
The medical assistant escorts the patient into the examination room. The medical assistant escorts the patient into the examination room.
Cleaning the Examination Room Cleaning the Examination Room
Examination of the ear using an otoscope. Examination of the ear using an otoscope.
The client is positioned for the examination The client is positioned for the examination
Video: Acid-base imbalances - compensation of metabolic acidosis and alkalosis

For a complete list of videos, visit our video library