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Math Help - Normal distribution #2

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    Normal distribution #2

    The volume of soda in quart soda bottles are normally distributed with a mean 32.3 oz and a standard deviation of 1.2 oz. What is the probability that the volume of soda in a randomly selected bottle will be less than 32 oz?
    Last edited by mr fantastic; December 3rd 2009 at 12:13 PM. Reason: Changed post title
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    Quote Originally Posted by superman31 View Post
    The volume of soda in quart soda bottles are normally distributed with a mean 32.3 oz and a standard deviation of 1.2 oz. What is the probability that the volume of soda in a randomly selected bottle will be less than 32 oz?
    Pr(X < 32) = Pr(Z < (32 - 32.3)/1.2) = Pr(Z < -1/4) = Pr(Z > 1/4) = 1 - Pr(Z < 1/4).
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