Question 1: A research team is investigating the role of knowledge update in ERP training. In their research model, they have many hypotheses. They expect that the individual effort positively relates to knowledge update and also positively relates to involvement. They also expect that knowledge update is positively related to involvement. They additionally believe that knowledge update increases willingness to learn. Besides, the increased value of involvement is expected to increase willingness to learn. a) Identify each variables of research model and determine the independent and dependent variables. b) Draw the research model c) Determine the direct and indirect relations of these model d) State the null versions of each hypothesis statements in the research model.