Dow Jones industrial average closed at 3768.52, down 3.70 . . . N.Y.S.E.'s composite index was down 0.17 to 254.17. . . Nasdaq Stock Market composite index rose 1.05 to 743.43 . . . American Stock Exchange up 0.75 to 442.59 . . . Gold dropped 30 cents to $380.40 on the Commodity Exchange in New York . . . The 30-year Treasury bond closed with a yield of 7.21 percent, down from 7.27 last Friday.