Task 1: A clinical psychologist noticed that several of his manic psychotic patients did chicken impersonations in public. He wondered whether this behaviour could be used to diagnose this disorder and so compared 10 of his patients against 10 of the most normal people he could find: naturally he chose to observe lecturers at the University of Sussex. He measured how many chicken impersonations they did over the course of a day, and how good their impersonations were (as scored out of 10 by an independent farmyard noise expert). The data are in the file chicken.dat. Use MANOVA and DFA to find out whether these variables could be used to distinguish manic psychotic patients from those without the disorder.