OPIM 1010 2010 Spring Extra Study Problems

Historicaldataonsuch

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Unformatted text preview: like (but no more than 4 at a time). To exchange DVDs customers merely mail back the DVD they no longer want and a new one is sent to them. NetDvd has determined that the DVDs spend on average 18 months in their system (either in their mail centers or with customers), after which they are “retired” and removed from circulation. At any one given time, 90% of their DVDs are assigned to customers (i.e., on some customer’s list of 4 DVDs) while 10% are in their mail centers without being assigned to a customer. They have an average of 100,000 customers at any one given time and that amount is neither shrinking nor growing. How many DVDs does NetDVD need to purchase each month? Q31 The Journal of Cryptic Psychology follows the following process to decide what to print. First, authors submit their papers to one of the 40 Associate Editors who either “rejects” the paper or allows the author to “revise” their paper. If the decision is “revise” then an author revises his/her paper based on the Associate Editor’s comments, and when finished, submits the revision to the Editor. 80% Reject 25% Rej...
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