1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Interval for a normal distribution

  1. Jan 18, 2014 #1
    1. The problem statement, all variables and given/known data

    A machine fills cereal boxes, normally distributed, with standard deviation of .1 oz. What amount setting should the machine be set to if only 1% of the boxes can have less than 16oz of cereal?

    2. Relevant equations



    3. The attempt at a solution

    I am thinking that I just manipulate the confidence interval for a normal distribution. So x - 2.33(σ) = 16, with 2.33 being the z-score for 99%. My amount would then be 16.233. Am I way off? Thanks
     
  2. jcsd
  3. Jan 18, 2014 #2

    Ray Vickson

    User Avatar
    Science Advisor
    Homework Helper

    Your reasoning and your answer are correct.
     
    Last edited: Jan 18, 2014
  4. Jan 18, 2014 #3
    Thanks, Dr. Vickson
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Interval for a normal distribution
  1. Normal distribution (Replies: 1)

  2. Normal distribution (Replies: 2)

  3. Normal Distribution? (Replies: 2)

Loading...