The Mann-Whitney test is to independent samples t test as Wilcoxon's matched-pairs signed-ranks test is to

Studies on the effectiveness of psychotherapy have found that __________

a) cognitive-behavioral psychotherapy is the most effective treatment for every problem. b) all psychotherapies can be used to treat any problem. c) Gestalt psychotherapy is the most effective treatment for any problem. d) no one psychotherapy worked for every type of problem.

Court rulings have established that criminal defendants who are found not guilty by reason of

insanity and committed to a mental hospital may ______ than the time they would have served in jail had they been convicted of the crime. a. not be released sooner or later c. be released later, but not sooner b. be released sooner, but not later d. be released sooner or later