Author Question: The _________ refers to the difference among different astronomersestimation of the time and ... (Read 74 times)

londonang

  • Hero Member
  • *****
  • Posts: 540
The _________ refers to the difference among different astronomersestimati on of the time and position of astral events.
 
  a. personal equation
  b. simple reaction
  c. choice reaction
  d. subtractive logic

Question 2

Differential history effects are a threat to internal validity for which of the following designs?
 
  a. differential research design
 b. one-group pretestposttest design
 c. pretest-posttest nonequivalent control group design
  d. longitudinal design



TDubDCFL

  • Sr. Member
  • ****
  • Posts: 357
Answer to Question 1

A

Answer to Question 2

c



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

The most common treatment options for addiction include psychotherapy, support groups, and individual counseling.

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

For a complete list of videos, visit our video library