Basic Data Science Task on Building a classfier

Build a classifier that classifies the "Salary" attribute - with 0 if the salary is predicted to be <=50K, and 1 for >50K. The Kaggle competition will be assessed using area under the ROC curve (AUC). Therefore, the output of your classifier needs to be a probability, i.e. a number between 0 and 1, representing the confidence that Salary is >50K for each instance.