Explore BrainMass

Explore BrainMass

    calculating the probability that an item is defective.

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

    Question was asked previously and the calculations not detailed enough for me to determine how the answer was received. Please provide detailed explanation - I got a different answer and I KNOW mine is not right!

    Question: A manufacturing process produces units that average 10 inches in length with a standard deviation of 3.2 inches. If only those units between 9.5 and 10.5 inches can be used, how many out of sample of 100 must be thrown away?

    THANK YOU!!!

    © BrainMass Inc. brainmass.com March 4, 2021, 5:54 pm ad1c9bdddf

    Solution Preview

    In order to answer this question, you must determine the z score for units with measurements of 9.5 and 10.5. Thus

    z = (x - mean)/standard deviation

    z for 9.5 = (9.5 - 10) / 3.2 = ...

    Solution Summary

    The following exercise uses a z-score to calculate the number of items from a manufacturing process that will need to be thrown out due to defectiveness.