Discuss the following:
As regional manager for a retail store, you want to determine if consumers' income levels are related to their spending pattern.
Q1. What statistical tool should you use?
Q2. If you have to select a sample of your store's customers based on gender, how can you determine if the sampling procedure is random?
Q3. Your research assistant has obtained data on two independent samples taken to compare consumers' ages. If you are not sure that the populations are normal, what test should you use?