using the probability approach to determine an inventory safety stock and wanting to be 95 percent sure of covering inventory demand, which of the following is the number of standard deviations necessary to have the 95 percent service probability assured?

Which of the following is an example of an opposing signal? no examplthates given.   i would say, that traffic lights in a city at major intersections direct the flow of traffic in opposite directions so would be an example.also, stop signs on either side of the same street would be an example. at a train crossing, the light for allowing car traffic in opposite directions or not would be another example.

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