please read the following case and answer the questions briefly

1. What is the business problem that the case study wants to solve?

2. Compare the flow chart on page 5 in the case study with the workflow of data analytics development in the last slide of "Introduction to Business Analytics" :

Among the three stages , 'Get Data', 'Build Data', and "Analyze Data', which stage contains the task of model selection and fittings ?

3. The model developed by the data scientists in this case study tries to predict what outcomes ? Why predicting these outcomes helps an airline company manage its costs?

file:///Users/Apple/Desktop/IBM_predictive%20analytics_flight_delays.PDF