13. You want to estimate the sales for the 30 existing \"Expressive Espresso\" shops. The dependent variable, Y, is the average daily sales. The independent variables are \"the number of cars that drive past per hour,\" \"the average income of the area,\" \"the number of tables at the store,\" and \"the number of competing shops in the area.\" You get Y = 26 + 0.1Cars + 0.011ncome + 10.0Tables 3.0Competition What signs did you expect for each variable? Did you get what you expected? Explain. 14. Let's continue with the previous question. If you didn't get what you expected, what would you do. Specifically talk about the above example