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Homework Help: Probability of obtaining a sample mean of x in n trials?

  1. Sep 23, 2010 #1
    1. The problem statement, all variables and given/known data
    Let's say I flip a coin 80 times. I keep track of what happens when I flip it twice. What is the probability that I will find that, on the average, x heads happen per trial?

    2. Relevant equations

    3. The attempt at a solution
    Determine what values x can hold in each trial in order to obtain a mean of X. Then I can use the binomial distribution on those values. Add the probabilities up. That gives me my probability.
  2. jcsd
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