1. S

    A Hypothesis testing problem

    I have been facing some doubts regarding the problem given below. Firstly, if this problem is a Z-test or a T-test? Secondly, what should be the standard deviation ? sigma =? Here is my attempted solution, Please help.
  2. J

    How to perform two samples z test in Doronix Math Toolbox?

    I'm using Doronix Math Toolbox. But I can't find how to perform 2 samples z test there. Can anyone help me? Thank you very much.