the regional tupperware dealers earned these commissions last month: $4,377.47, $3,183.76, $1,970.16, $2,270.88, $3,860.06, $2,508.55, $1,569.64, $4,205.30, $1,663.68, $3,960.71.what was the mean commision earned? round your answers to the nearest cents.