Explore BrainMass

Explore BrainMass

    Estimation: level of confidence

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

    A random check of 81 records of inmates from all federal prisons found the confidence interval for mean prison terms per prisoner to be 2.113 years to 2.287 years. Assuming a standard deviation of 0.4 year, what is the level of confidence provided by this interval?

    © BrainMass Inc. brainmass.com June 3, 2020, 5:06 pm ad1c9bdddf
    https://brainmass.com/statistics/confidence-interval/estimation-level-of-confidence-14496

    Solution Preview

    Mean= M = 2.2 years =(2.113+2.287)/2
    assuming mean to be midway between upper confidence limit and lower confidence limit
    Standard deviation =s = 0.4 years
    sample ...

    Solution Summary

    The confidence level for an interval estimate is calculated.

    $2.19

    ADVERTISEMENT