Explore BrainMass

Explore BrainMass

    normal distribution

    Not what you're looking for? Search our solutions OR ask your own Custom question.

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

    Suppose that scores on a particular test are normally distributed with a mean of 120 and a standard deviation of 19. What is the minimum score needed to be in the top 5% of the scores on the test? Carry your intermediate computations to at least four decimal places, and round your answer to at least one decimal place.

    © BrainMass Inc. brainmass.com March 4, 2021, 7:56 pm ad1c9bdddf
    https://brainmass.com/statistics/normal-distribution/normal-distribution-133655

    Solution Preview

    Denote by X the scores on a particular test. Obviously, X is a random variable following a normal distribution with a mean of 120 and a standard deviation of 19.

    Now we need to find ...

    Solution Summary

    It finds the minimum score needed to be in the top 5% of the scores on the test, where the score is normally distributed.

    $2.49

    ADVERTISEMENT