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F(,r,), that is, W has an F distribution with 1) (a) How to define a r.v. W so that W n and r, degrees of freedom ? Now, let

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them he Takyendentey 2 2 t.(a) tdinbibution wit Cindom Yai abe, hen W & 2 t 2 2 2 Chi-Aguared with 7,df& ndpendetey Chi-o qmaIhe be the (HF)d ) quantile we get, din hibaion W. ie eper (t,m) 1-d2PF 1 Fa(rA) PlFnT that fnd 1 ---frud) Fa (,T) ( wく Foosa. (0) T-dit Anitin t Unn(a) 4レッズ $fredem) Fhen the Ri V, T independnely N(en) has a t-littr kegrusg fatm. trnkintis t dishitT,9) The rint deity f +2 f,s () BECOM) t 2 () tEIR Seint demrily wtrgratre ne The DF T fT ) d t ER §-1+2 ds teR +2 + do 4. 114 47 .Z dz Ocz Susptitntirn: E 2 t 2-7 dz e)) nry rared + t t hhole ranges - Rt) tenei .4) +2 teR This is the padf 7-dis 2 Y

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