Elementary Principles 5 - 2.19 (a) X= X i =1 12 i C min= =...

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2- 5 2.19 (a) X X s X Xs i ii == = = =−= − = =+= + = ∑∑ 1 12 2 1 12 12 735 12 1 12 27 3 5 2 1 1 1 3 5 2 1 5 9 . (. ) . .( . ). . C C min= max= (b) Joanne is more likely to be the statistician, because she wants to make the control limits stricter. (c) Inadequate cleaning between batches, impurities in raw materials, variations in reactor temperature (failure of reactor control system), problems with the color measurement system, operator carelessness 2.20 (a), (b) (c) Beginning with Run 11, the process has been near or well over the upper quality assurance limit. An overhaul would have been reasonable after Run 12. 2.21 (a) 42 2 2 2 2.36 10 kg m 2.20462 lb 3.2808 ft 1 h ' h kg m 3600 s Q ×⋅ = (b) 4 (43 ) 6 2 approximate 3 62 2 exact (2 10 )(2)(9) ' 12 10 1.2 10 lb ft /s 31 0 ' =1.56 10 lb ft /s 0.00000156 lb ft /s
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This note was uploaded on 02/27/2012 for the course CHEMICAL E 312 taught by Professor Cheung during the Fall '11 term at The University of Akron.

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