In a shopping center it is known that, depending on the distance in Km from a population center, the number of customers (in hundreds) who go to this shopping center is: X: Number of customers 8 7 6 4 2 1 Y: distance (Km) 15 19 25 23 34 40 a) To calculate and interpret the linear correlation coefficient b) If the shopping center were located 2 km from the population center, how many customers could be expected to visit it? c) If 500 customers are to be received, how far from the town should the shopping center be located?