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

Author Question: Tamara's class experiment involves measuring reaction time. She uses one timer for the experimental ... (Read 79 times)

Evvie72

  • Hero Member
  • *****
  • Posts: 519
on: Jun 20, 2018
Tamara's class experiment involves measuring reaction time. She uses one timer for the experimental group and a second timer for the control group. Conducting the experiment this way can possibly introduce a confound based on:
 
  a. mortality.
  b. statistical regression.
  c. instrumentation.
  d. maturation.

Question 2

When participants in an experiment communicate with each other, the difference between groups may be reduced. This is called:
 
  a. diffusion.
  b. dissension.
  c. dissemination.
  d. statistical regression.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

xthemafja

  • Sr. Member
  • ****
  • Posts: 348
Reply #1 on: Jun 20, 2018
Answer to Question 1

C

Answer to Question 2

A


Evvie72

  • Hero Member
  • *****
  • Posts: 519
Reply #2 on: Jun 20, 2018
Thank you!


xthemafja

  • Sr. Member
  • ****
  • Posts: 348
Reply #3 on: Jun 20, 2018
Happy to help


« previous next »
 

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Humidity Measurement and Gas Flowrate Experiment Humidity Measurement and Gas Flowrate Experiment
Measuring Wind Measuring Wind
Example of simplified note for one-time client. Example of simplified note for one-time client.
Rosenthal and Fode’s Rat Experiment Rosenthal and Fode’s Rat Experiment
Disitive Time For Meat Disitive Time For Meat
If 250. L of nitrogen reacts with 582 L of hydrogen by the reaction: N2(g) + 3 H2(g) 2 NH3(g), ... If 250. L of nitrogen reacts with 582 L of hydrogen by the reaction: N2(g) + 3 H2(g) 2 NH3(g), ...
Video: Medullary osmotic gradient: countercurrent multiplier, urea recycling & vasa recta countercurrent exchange

For a complete list of videos, visit our video library