Explore BrainMass
Share

Explore BrainMass

    Standard Normal or Z score for finding the probability

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    The Modulus of rupture (MOR) for a particular grade of pencil lead is known to be 6500 psi with a standard deviation of 250 psi.

    a. Find the probability that a random sample of 16 pencil leads will have an average MOR between 6400 and 6550 psi.

    b. What did you assume in order to find this probability?

    © BrainMass Inc. brainmass.com October 10, 2019, 2:23 am ad1c9bdddf
    https://brainmass.com/statistics/probability/probabilities-standard-normal-z-score-375032

    Attachments

    Solution Summary

    This solution is comprised of a detailed explanation of standard normal distribution or z score. In this solution, a step-by-step explanation of this complicated topic provides students with a clear perspective of standard normal distribution to find the probability.

    $2.19