Explore BrainMass

Explore BrainMass

    Random Variables and Probability : Sampling Without Replacement

    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!

    A carton of 30 lightbulbs includes 5 defective ones. If 4 light bulbs are drawn at random (without replacement), what is the probability that;

    (a) 2 of the selected light bulbs are defective.
    (b) Not all the selected light bulbs are defective.

    © BrainMass Inc. brainmass.com March 4, 2021, 6:43 pm ad1c9bdddf
    https://brainmass.com/math/probability/random-variables-probability-sampling-replacement-58586

    Solution Preview

    Please see the attached file for the complete solution.
    Thanks for using BrainMass.

    I'm having difficulty with the set up and working of the problem.

    A carton of 30 lightbulbs includes 5 ...

    Solution Summary

    Sampling Without Replacement and defective light bulbs are investigated. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.

    $2.49

    ADVERTISEMENT