Author Question: Which of the following is a clear example of an interaction? a. rats given a drug in the morning ... (Read 37 times)

Collmarie

  • Hero Member
  • *****
  • Posts: 569
Which of the following is a clear example of an interaction?
 
  a. rats given a drug in the morning are more active than rats given placebo and rats given placebo in the evening are more active than rats given drug.
  b. larger print is read faster in bright light than smaller print and smaller print is read slower in dim light than larger print.
  c. compared to drinking non-alcoholic beverages, drinking alcohol makes men more aggressive in a hot room and drinking alcohol also makes men more aggressive in a cool room.
  d. performance on a proofreading task is impaired when others are present rather than alone. The effect is the same whether the others are men or women.

Question 2

Sally selects classrooms of first graders to study the effects of teaching styles on math
   achievement. This is an example of ___________________ _____.
 
  a) stratified random sampling
  b) cluster sampling
  c) proportional sampling
  d) sampling error



moormoney

  • Sr. Member
  • ****
  • Posts: 326
Answer to Question 1

A

Answer to Question 2

b



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

In inpatient settings, adverse drug events account for an estimated one in three of all hospital adverse events. They affect approximately 2 million hospital stays every year, and prolong hospital stays by between one and five days.

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

For a complete list of videos, visit our video library