Chapter 4 Q3 See attachment. Can you explain why these are the answers?

Executives at a large multinational corporation want to be able to predict the average number of units sold per month by the whole corporation for a given number of part-time employees. Data on units sold and parttime employees were collected for a sample of months. Complete parts a through c below. a) Which variable is the explanatory or predictor variable'iI . The explanatory variable is units sold per month because the executives want to know how units sold per month depends on parttime employees . The explanatory variable is units sold per month because the executives want to know how partitime employees depends on units sold per month. . The explanatory variable is partitime employees because the executives want to know how partitime employees depends on units sold per month. . The explanatory variable is parttime employees because the executives want to know how units sold per month depends on parttime employees b] Which variable is the response variable? . The response variable is units sold per month beoarrse the executives want to know how units sold per month depends on partitime employees . The response variable is partitime employees because the executives want to know how units sold per month depends on partitime employees . The response variable is units sold per month beoarrse the executives want to know how parttime employees depends on units sold per month. . The response variable is parttime employees because the executives want to know how parttime employees depends on units sold per month