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

Author Question: An experimenter collected data on how well a study guide improved grades on an exam taken late in ... (Read 166 times)

Cooldude101

  • Hero Member
  • *****
  • Posts: 557
on: Jun 20, 2018
An experimenter collected data on how well a study guide improved grades on an exam taken late in the semester compared to an exam taken early in the semester. Using a related sample means t test, the results showed that later grades were higher than early grades (t(74) = 3.64, p < .05). Which of the following was NOT an advantage of this design?
 
  a. The design controlled for students who did poorly both times.
  b. The design controlled for extraneous variables like intelligence levels.
  c. The design controlled for carry-over effects from already having taken one exam when the second exam was administered.
  d. All of the above are advantages of this design.

Question 2

The difference between the values of degrees of freedom for one sample t tests and related means t tests is that
 
  a. related means t tests have a df = N  2, where N is the number of pairs of scores.
  b. related means t tests have a df = N, where N is the number of pairs of scores.
  c. related means t tests have a df = N  1, where N is the number of pairs of scores.
  d. one sample t tests have a df = N  2, where N is the total number of raw scores.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

abro1885

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jun 20, 2018
Answer to Question 1

C

Answer to Question 2

C


Cooldude101

  • Member
  • Posts: 557
Reply 2 on: Jun 20, 2018
Thanks for the timely response, appreciate it

sailorcrescent

  • Member
  • Posts: 334
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

Did you know?

Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.

Palade's use of the pulse-chase method to study protein secretion Palade's use of the pulse-chase method to study protein secretion
Summary of US Census Data Summary of US Census Data
A typical OBD-II data link connector (DLC). The location varies with make and model and may even be ... A typical OBD-II data link connector (DLC). The location varies with make and model and may even be ...
Flow data for a healthy donor (top panel) and a HIV positive patient. CD3 is a T-cell marker, CD4 is ... Flow data for a healthy donor (top panel) and a HIV positive patient. CD3 is a T-cell marker, CD4 is ...
Your Guide to Functional Foods Your Guide to Functional Foods
Study egocentrism in children Study egocentrism in children
Video: Premenstrual Syndrome

For a complete list of videos, visit our video library