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Math Help - normal distribution problem

  1. #1
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    normal distribution problem

    A certain brand of soft drink is in a so called "litre" bottle. In fact, the amount of liquid in each bottle (in litres) is a normally distribuited random variable with mean 1.005 and standard deviation 0.01.

    a) If I buy four bottles, find the probability that the mean contents of the four bottles is less than 1 litre.
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  2. #2
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    Quote Originally Posted by shawli View Post
    A certain brand of soft drink is in a so called "litre" bottle. In fact, the amount of liquid in each bottle (in litres) is a normally distribuited random variable with mean 1.005 and standard deviation 0.01.

    a) If I buy four bottles, find the probability that the mean contents of the four bottles is less than 1 litre.
    i think its 1.005-1/ .01 = .5
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