Assume that both populations are normally distributed. a) Test whether mu1 ≠ mu2 at the a=0.01 level of significance for the given sample data.
b) Construct a 99% confidence interval about mu1-mu2

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .