Which Hypothesis Would Be Classified as a Statistical Hypothesis

Which hypothesis would be classified as a statistical hypothesis?

A) Oxygen inhalation by nasal cannula of 2 L/min will decrease oral temperature measurement taken with an electronic thermometer.
B) Oxygen inhalation by nasal cannula of 2 L/min does not affect oral temperature measurement taken with an electronic thermometer.
C) There will be a greater decrease in anxiety scores for patients receiving informational videos before open heart surgery than for patients receiving standard printed information.
D) There will be a difference in the performance accuracy of adult nurse practitioners and family nurse practitioners in formulating accurate diagnoses and acceptable interventions for suspected cases of domestic violence

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