Which of the following tactics will reduce the power of a planned ...

[mpobi80]

Which of the following tactics will reduce the power of a planned study using a t test for independent means?
 
  A) using a less stringent significance level (such as .10 instead of .05 )
  B) using more precise measures
  C) increasing the size of your samples
  D) using unequal sample sizes instead of equal ones (for the same number of participants)

Question 2

The results of a t test for independent means can be misleading when the sample variances are
 
  A) not at all different (e.g., a 1 : 1 ratio).
  B) a little different (e.g., a 1.5 : 1 ratio).
  C) moderately different (e.g., a 2 : 1 ratio).
  D) very different (e.g., a 4:1 ratio).

[FergA]

Answer to Question 1

D

Answer to Question 2

I appreciate you answering this question. Great community

[mpobi80]

Thank you

[FergA]

No problem