A researcher reports an F-ratio with df = 2, 18 from an ...

[fnuegbu]

A researcher 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?
 
  A) 2 treatments and 19 subjects
  B) 2 treatments and 20 subjects
  C) 3 treatments and 21 subjects
  D) 3 treatments and 22 subjects

Question 2

A sample of n = 5 scores has X = 20 and X2 = 180. For this sample, what is the value of the sample standard deviation, s?
 
  A) 5
  B) 8
  C) 12
  D) 20

[efwsefaw]

Answer to Question 1

C

Answer to Question 2

A

[fnuegbu]

Wow, this really help

[ttt030911]

Thanks for the timely response, appreciate it