« previous next »

Author Question: Age could affect reaction time, as well as nicotine. How could the researcher have controlled for ... (Read 32 times)

krzymel

  • Hero Member
  • *****
  • Posts: 548
on: Jul 13, 2018
Age could affect reaction time, as well as nicotine. How could the researcher have controlled for this potential extraneous variable?
 
  a) by randomly selecting participants from the population
  b) by counterbalancing the order of stimulus presentation across participants
   c) by matching each participant in the experimental group with a participant of the same age in the control group
  d) by using a different dependent variable

Question 2

You should write out numbers (e.g., twenty five) when
 
  a. beginning a sentence.
  b. it is larger than ten.
  c. it represents something other than data.
  d. using the metric system.


olivia_paige29

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 13, 2018
Answer to Question 1

C

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

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?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Controlled Experiments Manipulate a Variable Controlled Experiments Manipulate a Variable
In reaction 1, the formation of glucose 6-phosphate from glucose and inorganic phosphate In reaction 1, the formation of glucose 6-phosphate from glucose and inorganic phosphate
Effect of substrate concentration on the initial velocity of an enzyme-catalyzed reaction Effect of substrate concentration on the initial velocity of an enzyme-catalyzed reaction
Richmond, Virginia, lies in ruins in April 1865 at the time of Lincoln’s visit—and a few days before Richmond, Virginia, lies in ruins in April 1865 at the time of Lincoln’s visit—and a few days before
Healthier choices can be made when time is taken to read a nutrition label. Healthier choices can be made when time is taken to read a nutrition label.
Graph showing oral administration of a single-dose drug. The time of onset is 2 hours and the end of ... Graph showing oral administration of a single-dose drug. The time of onset is 2 hours and the end of ...
Video: Summation - defined, spatial, temporal & AP generation or not

For a complete list of videos, visit our video library