Aresearcher reports an f-ratio with df = 2, 18 from an independent-measures research study. based on the df values, how many treatments were compared in the study and what was the total number of subjects participating in the study?

3 treatments and 21 subjects were participating in the study .

Step-by-step explanation:

Let the number of treatments be k and the total number of subjects participating in the study be n.

Then , the df for numerator of F-ratio = k-1

df for denominator of F-ratio = n-k

Given : A researcher reports an F-ratio with df = 2, 18 from an independent-measures research study.

Based on the df values, we have

k-1 = 2 and n-k= 18

If

Then,

Therefore , 3 treatments were compared in the study and 21 subjects were participating in the study is 21.

the correct answer is 1: 2

step-by-step explanation:

hope this your welcome : )

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560