Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Determining sample size needed to test hypothesis

  1. Mar 24, 2006 #1
    I always do questions on school that ask for a test of hypothesis where the sample data is already give, but what if you want to do it the other way around, by first figuring out what sample size is needed to test a hypothesis at a given accuracy. Is that possible?
    Last edited: Mar 24, 2006
  2. jcsd
  3. Nov 3, 2006 #2


    User Avatar
    Science Advisor
    Homework Helper

    Sure. Just solve the test statistic for n; the value of n that equates the test stat. to the critical value (given the values of all other parameters) is your answer.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook