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Math Help - Normal distribution.

  1. #1
    Jul 2011

    Normal distribution.

    An orange juice producer buys all his oranges from a large orange orchard. The amount of juice squeezed from each of these oranges is approximately normally distributed with a mean of 70 millilitres and a standard deviation of 8 millilitres.What is the probability a randomly selected orange will contain

    a)between 62 and 73 millilitres
    b)between 72 and 78 millilitres
    c)75% of the orange will contain at least how many millilitres of juice
    Last edited by mr fantastic; July 6th 2011 at 03:39 PM. Reason: Re-titled.
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  2. #2
    Master Of Puppets
    pickslides's Avatar
    Sep 2008

    Re: Probability_Question

    What have you tried here?

    Have you transformed your information into a z-score?

    Use \displaystyle z = \frac{x-\mu}{\sigma}
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