Railways Technical Ability Metrology and Inspection Question Bank Metrology and Inspection

  • question_answer A manufacturer of rivets claims that the failure load in shear of his product is \[500\pm 25\,N.\] This specification implies that

    A) No rivet is weaker than 475 N and stronger than 525 N

    B) The standard deviation of strength of random sample of rivets is 25 N

    C) There is an equal probability of failure strength to be either 475 N or 525 N                       

    D) There is approximately two-to-one chance that the   strength of a rivet lies between 475 N or 525 N.

    Correct Answer: A


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