Thirty-five samples of size 7 each were taken from a fertilizer-bag-filling machine at Panos Kouvelis Lifelong Lawn Ltd. The results were: Overall mean =54.75lb : Average range R=1.54lb. a) For the given sample size, the control limits for 3 -sigma chart are: Upper Control Limit (UCLx)= Ib. (round your response to three decimal places). Thirty-five samples of size 7 each were taken from a fertilizer-bag-filling machine at Panos Kouvelis Lifelong Lawn Ltd. The results were: Overall mean =54.75lb : Average range R=1.54lb. a) For the given sample size, the control limits for 3 -sigma chart are: Upper Control Limit (UCLx)= Ib. (round your response to three decimal places)