Question

i beed help with part b. thanks!

Assume that both populations are normally distributed (a) Test whether u, #2 at the a 0.01 level of Population 1 13 Population 2 13 16.1 12.6 significance for the given sample data (b) Construct a 99% confidence interval about 1 2 X 3.5 4.6 different means B. Do not reject Ho, there is not sufficient evidence to conclude that the two populations have different means. C Do not reject Ho. there is sufficient evidence to conclude that the two populations have different means. OD Reject Ho, there is not sufficient evidence to conclude that the two populations have different means. (b) Construct a 99% confidence interval aboutu,-2 and We are 99% confident that the mean difference is between (Round to two decimal places as needed. Use ascending order.) ? alde and then.click Check Answer

Answer 1

help for part ② we have: populations - R n = 13, D = 161 f S = 3.5 { populahon 2 = ار n=13, z = 12.6 & 82=4.6 % confidence internal about M, H2 =( 67-7)+ ( td12.06+ SIR + )? here assume equal varianle= df = ni thar2 = 13+13-2 = 24

istol, 242 +2.497) -(from tackle) =[(16.1–12-6) 4 (2-444 * 5 (85)2 + (49.412)] =[ 3.5+ 4.4839) = (-0.9839, 7.9839] -048, 7.98) we are 94% confident that the mean difference is between [ result is not value] -0.98 and significant 7.98. because it include nula