Management has carefully measured the standard deviation of the demand of a product and plans to use this to calculate the level of safety stock. If they keep one Standard Deviation of safety stock then the expected service level should be approximately:

A) 90%. B) 100%. C) 35%. D) 15%. E) 85%.


E

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For speech intelligibility in spaces where this is a primary requirement–churches, auditoriums, etc.–the background sound level should be at least how many dB below the voice level?

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An LTI continuous-time system is described by the differential equation 2y’(t)+5y(t)=x’(t). Which is the correct description of this systems frequency response?

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