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August 20th, 2013, 08:38 PM  #1 
Newbie Joined: Aug 2013 Posts: 1 Thanks: 0  Probability of processes
Hi, I'm trying to solve the following question, but unsure how to approach it. A paper manufacturing process states (in its specifications) that each piece of paper's weight will be less than the nomial weight of 1.2 grams on NO MORE than 1 occasion in 100. Currently, the process produces to any required mean piece of paper weight with a standard deviation of 0.01 grams. A new process is available which makes to a more consistent weight, the standard deviation of weights being 0.008 grams. 1) Sketch the functions that model these 2 cases (current and new process). Both processes can make 20,000 sheets of paper per minute, and will be required to work for a 40 hour week, 50 weeks a year. The price of paper is around £2 per kilogram. 2) Find the annual savings made possible by the new process. I thought of using normal distribution tables to work out this question, however nowhere in the question does it state that the process is normally distributed so I think thats wronge (I have no idea how to approach this question). Any help would be much appriciated. 
August 21st, 2013, 02:55 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,856 Thanks: 745  Re: Probability of processes
I responded to this question in Physics Forums.


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