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Math Help - another Normal Distribution question

  1. #1
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    another Normal Distribution question

    Hi

    Can someone help me on the following question
    The bonding strength of a drop of plastic glue is normally distributed with mean 103.7kg and standard deviation 8.1kg. A broken plastic strip is repaired with a drop of this glue and then subjected to a test load of 98kg.
    ->What is the probability that the bonding will fail?
    ->What would the test load have to be for the probability of bond failure to be 0.1?

    P.S
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  2. #2
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    Re: another Normal Distribution question

    Have you found a z-value yet?
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  3. #3
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    Re: another Normal Distribution question

    Quote Originally Posted by Paymemoney View Post
    Hi

    Can someone help me on the following question
    The bonding strength of a drop of plastic glue is normally distributed with mean 103.7kg and standard deviation 8.1kg. A broken plastic strip is repaired with a drop of this glue and then subjected to a test load of 98kg.
    ->What is the probability that the bonding will fail?
    ->What would the test load have to be for the probability of bond failure to be 0.1?

    P.S
    These are routine questions, the sort found in every textbook that covers normal distribution. Have you reviewed the examples in your textbook and class notes?
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