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Math Help - probability

  1. #1
    b2k
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    probability

    assuming iron levels in a solution is evenly distributed with mean of 60g/l and a standard deviation of 6g/l. let x denote the amount of iron in g/l in this solution then x ~ N(60, 6 sqd) calculate the following probabilities

    p(x<66)
    p(x<68)
    p(x>50)
    p(50<x<70)
    construct a symetric range around mean of x such that 95% of reading taken off this solution will have iron levels in this range
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  2. #2
    Flow Master
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    Quote Originally Posted by b2k View Post
    assuming iron levels in a solution is evenly distributed with mean of 60g/l and a standard deviation of 6g/l. let x denote the amount of iron in g/l in this solution then x ~ N(60, 6 sqd) calculate the following probabilities

    p(x<66)
    p(x<68)
    p(x>50)
    p(50<x<70)
    construct a symetric range around mean of x such that 95% of reading taken off this solution will have iron levels in this range
    Can you calculate the z-values? Can you use a Strandard Normal Distribution Table? You need to say what yuo're able to do and where you get stuck.

    Reading this thread might help: http://www.mathhelpforum.com/math-he...deviation.html
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