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Thread: Homework assignment samples

  1. #1
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    Brussel
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    Homework assignment samples

    Hello everyone,

    I have a question about my homework assignment;


    A number of samples were given with various measurement values Xi ( N/mm2 ) and frequencies fi ( a total of 73 samples were held) .


    In question a, I calculated the average ( 20 N/mm2 ) and standard deviation ( s= 3,60 ) of the sample.

    question b states: what is the strength with a 5-% probability of undercut. With which formula can I calculate this?


    Thanks, Erwin.
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  2. #2
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    Brussel
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    Re: Homework assignment samples

    I found something on the internet, is this the right formula? Does anyone know that? ;

    Xk= x̄ - z * s
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  3. #3
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    Brussel
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    Re: Homework assignment samples

    Is there anyone who can help me with this?

    Thanks!
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