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Homework Help: Statistics - Tests of Hypotheses

  1. Apr 1, 2012 #1
    1. The problem statement, all variables and given/known data
    Consider N(μ, σ2=40) distribution. To test H0:=32 against H1:μ>32, we reject H0if the sample mean [itex]\overline{X}[/itex]≥c. Find the sample size n and the constant c such that OC(μ=32)=0.90 AND OC(μ=35)=0.15.

    2. Relevant equations

    What I don't know

    3. The attempt at a solution

    Can't figure out how to do this one.
  2. jcsd
  3. Apr 1, 2012 #2

    Ray Vickson

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    Science Advisor
    Homework Helper

    Show your work. Tell us why you cannot just use the material from the textbook or the course notes to get started with this problem.

  4. Apr 1, 2012 #3
    What work? I do not have anything. "What I don't know" under relevant equation means I don't know which equation to use, because I do not find one that would work here. If I had found something, I would not have asked.
    Last edited: Apr 1, 2012
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