7..3.6. If Y is a chi square random variable with n degrees of freedom, the pd! of (Y - n);./ii, converges to .fz (z) as n goes to infinity (recall Question 7.3.2). Use the asymptotic normality of ( Y - n)J./2n to approximate the fortieth percentile of a ch i square random variable with 200 degrees of freedom.
7.3.7. Use Appendix Table A.4 to find
7.J.8. Let V and U be independent chi square random variables with 7 and 9 degrees of freedom, respecth,:ely. Is it more likely that ;;will be between (1) 2.51 and 3.29 or (2) 3.29 and 4.20?
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