Investigators performed a randomized experiment in which 421 juvenile delinquents were randomly assigned to either multisystemic therapy(MST) or just probation(control group). Of the 219 assigned totherapy, 92 had criminal convictions within 12 months. Of the 202 in the controlgroup, 71 had criminal convictions within 12 months. Determine whether the therapy caused significantly fewer arrests at a 0.05 significance level. Start by comparing the sample percentages.

Find thep-value for this test.