A Lawrence woman has been sentenced to a decade in prison for her role in a crack-cocaine distribution ring.U.S. District Court Judge John W. Lungstrum on Tuesday sentenced Lauren A. McGoff to 10 years’ imprisonment, followed by three years of supervised release. McGoff, age 25 at the time of her plea this summer, pleaded guilty to conspiracy to distribute more than 50 grams of crack cocaine within 1,000 feet of a public elementary school. The case dates to 2004, when Lawrence police raided homes in the 800 block of Connecticut Street and 2100 block of Naismith Drive.Two co-defendants, Christopher L. Mumford and Earnest C. Martin, both age 30 at the time their pleas were entered earlier this year, have been convicted in the case and will be sentenced Jan. 29. Mumford pleaded guilty to using a gun in connection with a drug-trafficking crime, and Martin pleaded guilty to conspiracy to distribute crack cocaine.Martin previously had sought to withdraw his plea after he entered it, but he dropped that request.-contributed by Eric Weslander.