Determine a minimal sufficient statistic for a sample of n from the rate gamma model, i.e., f? (x) = ??0 6 (?0) x?0?1 exp {?? x} for x > 0,?> 0 and where ?0 > 0 is fixed

6.1.19 Determine a minimal sufficient statistic for a sample of n from the rate gamma model, i.e., gao fo (x) x 0- exp {-0x} I (ao) for x > 0, 0 > 0 and where ao > 0 is fixed