Can a jury change its verdict to "guilty" after the foreman mistakenly signed the form stating "not guilty"?

4 See United States v. Mears, 614 F.2d 1175, 1179 (8th Cir.), cert. denied, 446 U.S. 945, 100 S.Ct. 2174, 64 L.Ed.2d 801 (1980) (affirming the district court's decision allowing the jury to change its verdict to "guilty" after the foreman declared in open court that the verdict form stating "not guilty" was incorrectly signed); United States v. Love, 597 F.2d 81, 85-87 (6th Cir.1979) (jury verdict changed after polling); Shiflett v. Welch, 161 F.2d 933 (4th Cir.), cert. denied, 332 U.S. 777, 68 S.Ct. 41, 92 L.Ed. 362 (1947) (after discharging the jury, the court corrected a mistakenly announced verdict of "not guilty" by changing it to "guilty" when it was shown that the jury had confused two counts in the indictment).