Bob, Mary, and Wu work as engineers for NBC Ltd. Bob graduated from MIT, Mary from Carnegie-\\nMellon, and Wu from UCLA, the 3 best engineering schools in the U.S. Using the US Census Bureau\\ncategories, Bob checks African-American, Mary checks Hispanic-American, and Wu checks Asian-American.\\nAll three are native U.S. citizens. Based on the information above alone, you can most likely conclude that