A research report concludes that there are significant differences among treatments,with "F(2,24)= 8.62,p

Question

A research report concludes that there are significant differences among treatments,with "F(2,24)= 8.62,p < .01." If the same number of participants was used in all of the treatment conditions,then how many individuals were in each treatment?
A)7
B)9
C)10
D)30

Quizplus · Accepted Answer

Since there are three treatment conditions, the first number in the parenthesis represents the degrees of freedom between the treatments (3-1=2). The second number represents the degrees of freedom within the treatments, which is equal to the total number of participants minus the number of treatment conditions (n-3). Therefore, we can solve for n as follows:

2 + n - 3 = 24

n = 25

Since the same number of participants was used in each treatment, we divide the total number of participants by the number of treatments:

25 / 3 = 8.3333

Rounded to the nearest whole number, each treatment had 9 individuals.

A Research Report Concludes That There Are Significant Differences Among