Which of the following research situations would be most likely ...

[daltonest1984]

Which of the following research situations would be most likely to use an independent-measures design?
 
  a. Examine the development of vocabulary as a group of children mature from age 2 to age 3.
  b. Examine the long-term effectiveness of a stop-smoking treatment by interviewing subjects 2 months and 6 months after the treatment ends.
  c. Compare the mathematics skills for 9th-grade boys versus 9th-grade girls.
  d. Compare the blood-pressure readings before medication and after medication for a group a patients with high blood pressure.

Question 2

If the 90 confidence interval for  is from 40 to 50, then the sample mean is M = 45.
 
  Indicate whether the statement is true or false

[makaylafy]

Answer to Question 1

C

Answer to Question 2

T

[daltonest1984]

TYSM

[atrochim]

Excellent