Roberta Bolling, 68, who survived the sinking of the Titanic nearly 50 years ago, finally got a check Friday in compensation for losses and sufferings she encountered that night. The check, from trustees administering the compensation fund, was for $280. Mrs. Bolling, who has been bidridden with arthritis for 11 years, said "It's not much use to me now," and invested it in government bonds.