Kramer Products has determined that the number of machine hours worked (MH) drives the amount of manufacturing overhead incurred (MOH). On the basis of this relationship, a staff analyst has constructed the following regression equation: MOH=240,000+8MH Which of the choices correctly depicts the nature of Kramer's variables? Machine hours are both dependent and independent variables Manufacturing overhead is both a dependent and independent variable Eight is the dependent variable and 240,000 is the independent variable Manufacturing overhead is an independent variable while machine hours are a dependent variable Manufacturing overhead is a dependent variable while machine hours are an independent variable