If we are testing for the difference between two population means, it is assumed that the sample observations from one population are independent of the sample observations from the other population. A. TrueB. False

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,