Question

Would like help on lower confidence bound based on chi square method? Photo attached.

Answer 1

My X^2 = 33.196 since i am only considering one side?

Answer 2

so alpha = .10, and we have dF= 24 right?

Answer 3

33.196 = X^2

\[\chi^2<\frac{(n-1)s^2}{\sigma^2}\]
\[\sigma^2<\frac{(n-1)s^2}{\chi^2}\]

Answer 4

24 (2.03)/33.196

seems to be all the parts ...

Answer 5

Thanks, this is my answer. I wasn't sure.