You have been discussing a research project with your friend ...

[ahriuashd]

You have been discussing a research project with your friend Jerri. Jerri has told you that her research hypothesis states, the mean of population 1 is less than the mean of population 2 .
 
  How would you write this research hypothesis in symbols?
 
  a. H1 1 < 2
  b. H0 1 < 2
  c. H1 1  2
  d. H0 1 = 2

Question 2

Threats to internal validity are threats to saying __________.
 
  a. the independent variable caused the change in the dependent variable.
  b. the dependent variable caused the change in the independent variable.
  c. the results can be generalized to other populations.
  d. the results are due to chance.

[HandsomeMarc]

Answer to Question 1

A

Answer to Question 2

A

[ahriuashd]

TYSM

[sailorcrescent]

Gracias!