Exercise. Patients underwent knee replacement surgeries for one or both knees. The data record patient id, the replaced knee number (1 or 2) , and satisfaction scores pre-operatively, one day, one week, and one month after the surgery. The data are Patient Knee Score Score at Score at Score at ID Number Pre-op one day one week one month 01 10 02 15 15 10 OOOWOC 288 8 10 (a) Use the ARRAY statement to create a data set containing satisfaction scores for knee 1. The data set should look like this id visit score 01 01 86828