Two-Sample Test of Hypothesis

[@user-kn5hj5ve9f]

The way we find CV in one sample hypothesis is different with the way we find CV in two sample hypothesis?

[@furbasherpa11]

i don't know how to get the critical value using z table. would you please help me ? i have exam tomorrow

[@furbasherpa11]

in z table there is no infinity

[@mohamedmamdouh745]

How did you get the population standard deviation? At min 8:16 +thanks for your videos it's so helpful ❤❤

[@husnaj8327]

The sigma or population sd is given in the question. If it is not given, you can use the formula of sd. In this case, you'll be given the observations (x) in order to compute the sd

[@user-kn5hj5ve9f]

why while teacher u using formula Z but using table T isnt not a same thing