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

Author Question: An experiment is being conducted to determine the effects of caffeine intake on student performance. ... (Read 122 times)

bobbysung

  • Hero Member
  • *****
  • Posts: 519
on: Jun 22, 2018
An experiment is being conducted to determine the effects of caffeine intake on student performance. One group is made to drink 5 cups of coffee, the other group drinks 1 cup of coffee. They then take the exam. The independent variable is ________.
 
  a. the amount of caffeine consumed.
  b. the group membership.
  c. how alert the students are during the exam.
  d. the students' performance on the exam.

Question 2

Studies where one group gets an experimental drug and another gets a placebo are called:
 
  a. randomized clinical trials c. quasi-experimental studies
  b. correlational studies d. longitudinal studies


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

aadams68

  • Sr. Member
  • ****
  • Posts: 317
Reply #1 on: Jun 22, 2018
Answer to Question 1

A

Answer to Question 2

A


bobbysung

  • Member
  • Posts: 519
Reply 2 on: Jun 22, 2018
:D TYSM

marict

  • Member
  • Posts: 304
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Approximately 25% of all reported medication errors result from some kind of name confusion.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Multisystem effects of multiple sclerosis. Multisystem effects of multiple sclerosis.
Influence of nutritional intake Influence of nutritional intake
A resonance tube, called a Helmholtz resonator, is used on the intake duct between the air filter ... A resonance tube, called a Helmholtz resonator, is used on the intake duct between the air filter ...
Side Effects of Sugar Side Effects of Sugar
The Taylor–Woods–Hughes experiment The Taylor–Woods–Hughes experiment
Determine m​, ​n, and i for money invested at 3.6​% compounded semi-annually for 3.5 ... Determine m​, ​n, and i for money invested at 3.6​% compounded semi-annually for 3.5 ...
Video: Properties of macromolecules (Explained with No Audio)

For a complete list of videos, visit our video library