A medical researcher wants to determine which of these 3 migraine medications works fastest to relieve pain. Time is in minutes. Do an ANOVA test and test at α=.05,
able[[Groups,n,Sample Mean,Variance],[Medication A,20,14mins,1.4],[Medication B,18,17mins,8.1],[Medication C,22,16 mins,7.2]]
Grand Mean: ar{x}=15.63 (rounded)
a) State the null and alternate hypotheses
b) Identify d.f.N, d.f.o (use the value on table 7 closest to your value if not exact), and F_(0)
c) Find MS_(B),MS_(W), show work
d) Find F
e) Make decision and interpret results
minutes. Do an ANOVA test and test at α=.05.
Variance 1.4 8.1 7.2
Groups Medication A Medication B Medication C Grand Mean:x=15.63 (rounded) a) State the null and alternate hypotheses
n 20 18 22
Sample Mean 14 mins 17 mins 16 mins
c)Find MSs.MSw,show work d)Find F e)Make decision and interpret results