Explore BrainMass

Explore BrainMass

    The Mean of X Based on Standard Deviation

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

    If X is a normal random variable with standard deviation 4.00, and if the probability that X is more than 5.52 is .305, than what is the mean of X?

    © BrainMass Inc. brainmass.com June 3, 2020, 9:18 pm ad1c9bdddf
    https://brainmass.com/statistics/probability/175842

    Solution Preview

    Denote by mu the mean of X. Given

    P(X>5.52)=0.305

    i.e.,

    P((X-mu)/4> ...

    Solution Summary

    This solution computes the mean of variable X.

    $2.19

    ADVERTISEMENT