3. For each of the following scenarios, state whether the null hypothesis should be rejected or not. State any assumptions that you make beyond the information that is given. (a) H_{0}; mu=6,H a : mu ne6.n=25.; overline x =5.6.; s=2.5.a=0.05 (b) H_{0}; mu=6, mu<6,; n = 25; overline x =5.6.; s = 2.5; alpha = 0.05 () Ho mu=25,H ai mu>25,n=81. overline x =26.4; s = 3.2 , a = 0.01 (d) H_{0}; mu = 50 , H alpha :; mu ne50,n=55. p-value =0.053