A sociologist randomly selects 705 females 15 to 19 years old and asks each to disclose her family structure at age 14 and whether she has abused drugs. Use the results in the table to answer the questions below.

Structure 1 Structure 2 Structure 3 Structure 4 Had abused drugs 65 69 64 60 Had not abused drugs 81 116 110 140 (a) Compute the expected values of each cell under the assumption of independence. Structure 1 Structure 2 Structure 3 Structure 4 Had abused drugs Had not abused drugs (Round to three decimal places as needed.)