### Chi Squared Distribution: Concentration of Lactic Acid

1. Suppose that we will sample 20 chunks of cheese in Example 7.2.1. Let T = .... where Xi is the concentration of lactic acid in the ith chunk. Assume that sigma^2 = 0.09. What number c satisfies Pr(T<c)=0.9? Please see the attached file for the fully formatted question.