Recent content by Pinto09

Just one last question Since s(y) > s(x) where x= year 1 and y= year 2 In a) should I reject H(0) if s(x)^2 / s(y)^2 < F n(x)-1, n(y)-1, (a) or reject if s(x)^2 / s(y)^2 > F n(x)-1, n(y)-1, (a)?

All right, thanks! But do you think I should use alfa = 5%, or is another number better?

Homework Statement The electricity usage (KWh) in homes was studied over a period of time. For Year 1: Mean = 1130 Std dev. = 196 n = 16 For Year 2: Mean = 1350 Std dev. = 302 n = 21 a) Test the hypothesis that the std dev. in year 2 has increased compared to year 1...