Ph. D. Answer Key Exercise 5.5 1. All people who made lots of money on the stock market are inside traders. All persons identical to Ivan Boesky are people who made lots of money on the stock market. Therefore, all people identical to Ivan Boesky are inside traders. All times suicide rates decline are times people's lives are better adjusted.
All recent years are times suicide rates decline.
Therefore, all recent years are times people's lives are better adjusted. All cars purchased by environmentalists are fuel- efficient cars. No Rolls Royces are cars purchased by environmentalists. Therefore, no Rolls Royces are fuel-efficient cars. Invalid, illicit major 4.