Choose the correct NULL hypothesis for the given scenario. The school board is wondering about pedestrian safety in the school zone.  They conduct a study to determine whether or not traffic moves at the posted limit of 25 miles per hour during the school day. A.  ?≠25μ≠25?≠25μ≠25 B.  ?=25μ=25?=25μ=25 C.  ?⎯⎯⎯=25x¯=25?⎯⎯⎯=25x¯=25 D.  ?⎯⎯⎯≠25

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