Recent content by risya896

  1. R

    hypothesis testing, stuck at finding standard deviation

    here's the actual question: The calculated nitrogen content of pure benzanilide is 7.10%. Five repeat analyses of "representative" samples yielded values of 7.11%, 7.08%, 7.06%, 7.06%, and 7.04%. Using an ALPHA level of size 5%, can we conclude that the experimental mean differs...