In: Statistics and Probability
Let X ∼ Normal(0, σ^2 ).
(a) Find the distribution of X^2/σ^2 . (Hint: It is a pivot quantity.)
(b) Give an interval (L, U), where U and L are based on X, such that P(L < σ^2 < U) = 0.95.
(c) Give an upper bound U based on X such that P(σ^2 < U) = 0.95.
(d) Give a lower bound L based on X such that P(L < σ^2 ) = 0.95