Assume that we want to construct a confidence interval. do one of the? following, as? appropriate: (a) find the critical value t subscript alpha divided by 2? , ? (b) find the critical value z subscript alpha divided by 2? , or? (c) state that neither the normal distribution nor the t distribution applies. here are summary statistics for randomly selected weights of newborn? girls: n=193? , (x w/overbar) =30.8 ? hg, s=7.6 hg. the confidence level is 95? %.
ta/2=
za/2=
or
neither the normal distribution nor the t distribution applies.