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
C
You might also like to view...
According to the U.S. Census Bureau, about 15 million people live within a cohabitive situation
Indicate whether the statement is true or false
Why are women far more likely to be widows than are men?
a) Wives are typically a few years younger than their husbands. b) Mortality rates among females are higher than for males. c) Widowed women are more likely to remarry than are widowed men. d) Men are more likely to be in the sandwich generation. e) Women are more likely to be caring for an aging relative.
Data collection requires ______.
a. no budget at all b. a large budget c. a large amount of participants d. a small amount of participants
Define Ego boundaries.
What will be an ideal response?