The paired t-test a. is used for randomized groups designs b. ...

[haleyc112]

The paired t-test
 
  a. is used for randomized groups designs
  b. is less powerful than the randomized t-test
   c. is used to analyze within-subjects designs
  d. tests differences between pairs of participants
  e. requires that two t-tests be conducted

Question 2

In a lot of research on smoking among adolescents, the reported number may not be a useful indicator because
 
  a. most of the research used key informant sampling rather than probability sampling.
  b. many people are not willing to recognize the extent to which adolescents have become addicted to cigarettes.
  c. the definition of what it means to smoke is not well defined on most surveys.
  d. the tobacco industry has been successful in keeping the number of adolescent smokers hidden.

[isabelt_18]

Answer to Question 1

C

Answer to Question 2

C

[haleyc112]

Excellent

[adammoses97]

TYSM