Multiple Choice
A study has 18 participants in the experimental group and 7 participants in the control group. What is the harmonic mean of these sample sizes?
A) 18/(18 + 7) + 7/(18 + 7) = .6
B) (2) (18) /(18 + 7) + (2) (7) /(18 + 7) = 2.0
C) (2) (18) (7) /(18 + 7) = 10.08
D) (18 + 7) 2/(18 + 7) = 25
Correct Answer:
Verified
Correct Answer:
Verified
Q13: In an experiment involving 50 participants, which
Q14: Which of the following is an example
Q15: In a t test for independent means,
Q16: When sample sizes are unequal, the _
Q17: In the formula" <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6993/.jpg" alt="In the
Q19: The variance of a distribution of differences
Q20: Each of the following is part of
Q21: Which of the following is an example
Q22: For a study using a t test
Q23: Power is greatest in a t test