Joglekar et. al. (1989) considered the following windmill data that record the direct current (in volts) produced by given wind velocities (in miles per hour): Statistical Hypothesis. Discuss how you think the variables velocity and output might be related to each other. Which one would be the explanatory variable and which would be the response variable? Does the response variable tend to increase or decrease as the explanatory variable increases? Explain Based on the discussion above, write the appropriate statistical hypothesis. H0 :.