Hai can anyone help me on this question Industrial engineering

Energy Battery Sdn Bhd has recently receiving complaints from retailers that its AAA 1.5 volt batteries are not lasting as long as other brands. Sahardi, the head of TQM program at Pekan plant believes that there is no problem because the batteries have an average life of 50 hours; about 10% longer than their competitors' model. After ensuring that the process was running properly as he wanted, Sahardi took size 5 samples of AAA 1.5 volt batteries each hour for 10 conservative hours to establish the standard control limits. Those 10 hours samples are shown in Table 1. Sample 3 Hour 1 2 4 5 1 51 50 49 50 50 2 45 47 70 46 36 3 50 35 48 39 47 4 55 70 50 30 51 5 49 38 64 36 47 6 59 62 40 54 64 7 36 33 49 48 56 8 50 67 53 43 40 9 44 52 46 47 44 10 70 45 50 47 41 Table 1: Battery lifetime (Hours) Evaluate the control limit and develop appropriate control chart (Mean chart and Range chart). Determine whether the process is in control