Help for this problem would be greatly appreciated.

Nine expans Ialed two bands of mee in a laslelesling expenmenc A rating nn 3 Frpninl same (1 :exlreme'y unplaasing' 7 : extra me \\y measmg) '5 given Iur each uiluur characlanslms lasha' amma' nmness, and acidily Tne data We (below me quesmanep conning me ralings accumulanen aver all fem chavanerinxca Cumplete parts (a) Ihmugh (d) hem n. Allhe HM \\eve' nf Eignicance. i5 lhem Evidence 0| 3 dihrence in Ins mean ratingE belwaen [n2 lwn brands? Le|u1 he Ihe mean ra|ing forhtandA and n2 be me mean valing Io! brandB Delevmine Ihe MH and enemeuve hypnlheses furlhislal OA. Hu nuzuwnereurllrh) O E. Hu urniwnerennwrnz) H1 u\") HI "Den 0C. Hn un:u(wnereuu=uruz) OD. Hnmusumnereuuwrk) H' [19:0 HI my!) I). The lejl slalwslwc '5 "5w : (Chunse me mired answer, Raund lo mu decimal places In he light of he decwma' pmnl as needed ) A. 71 m1 7 n 0 15m : 72 70lound usmglurmu'a (m a). 15m : 15 E. , , 0 15m : .2 85lound usngmnnma (ID 3). 13m : W I? 11111 1/? D. , 0 15m : +3 15 {mind using lonnula (m 3,, 15m : W c. 0 15m : +0 75 found using formula (m a), 1m, : 1 1557) c. The crilwczl value() ewe) (Chums me mired answer, Rnund m Mn decima' p'aces n. Ihe n'gm aflhe denim paint as needed a O A. 73 36 and +3 35 lound using tTINVZTm 01,6) 0 E. 72 50 and +2 90 hand uswng tTINWD OLE) O C. 73 25 and +3 25 lound usmg tTlNVZTw 01,9) 0 D. 72 31 and +2 3| lound uswng tTINVZTm ) \f